mirror of
https://github.com/michaelrsweet/mxml.git
synced 2024-11-14 15:55:30 +00:00
2276 lines
60 KiB
C
2276 lines
60 KiB
C
//
|
||
// File loading code for Mini-XML, a small XML file parsing library.
|
||
//
|
||
// https://www.msweet.org/mxml
|
||
//
|
||
// Copyright © 2003-2024 by Michael R Sweet.
|
||
//
|
||
// Licensed under Apache License v2.0. See the file "LICENSE" for more
|
||
// information.
|
||
//
|
||
|
||
#ifndef _WIN32
|
||
# include <unistd.h>
|
||
#endif // !_WIN32
|
||
#include "mxml-private.h"
|
||
|
||
|
||
//
|
||
// Local types...
|
||
//
|
||
|
||
typedef enum _mxml_encoding_e // Character encoding
|
||
{
|
||
_MXML_ENCODING_UTF8, // UTF-8
|
||
_MXML_ENCODING_UTF16BE, // UTF-16 Big-Endian
|
||
_MXML_ENCODING_UTF16LE // UTF-16 Little-Endian
|
||
} _mxml_encoding_t;
|
||
|
||
typedef struct _mxml_stringbuf_s // String buffer
|
||
{
|
||
char *buffer, // Buffer
|
||
*bufptr; // Pointer into buffer
|
||
size_t bufsize; // Size of buffer
|
||
bool bufalloc; // Allocate buffer?
|
||
} _mxml_stringbuf_t;
|
||
|
||
|
||
//
|
||
// Macro to test for a bad XML character...
|
||
//
|
||
|
||
#define mxml_bad_char(ch) ((ch) < ' ' && (ch) != '\n' && (ch) != '\r' && (ch) != '\t')
|
||
|
||
|
||
//
|
||
// Local functions...
|
||
//
|
||
|
||
static bool mxml_add_char(mxml_options_t *options, int ch, char **ptr, char **buffer, size_t *bufsize);
|
||
static int mxml_get_entity(mxml_options_t *options, mxml_io_cb_t io_cb, void *io_cbdata, _mxml_encoding_t *encoding, mxml_node_t *parent, int *line);
|
||
static int mxml_getc(mxml_options_t *options, mxml_io_cb_t io_cb, void *io_cbdata, _mxml_encoding_t *encoding);
|
||
static inline int mxml_isspace(int ch)
|
||
{
|
||
return (ch == ' ' || ch == '\t' || ch == '\r' || ch == '\n');
|
||
}
|
||
static mxml_node_t *mxml_load_data(mxml_node_t *top, mxml_options_t *options, mxml_io_cb_t io_cb, void *io_cbdata);
|
||
static int mxml_parse_element(mxml_options_t *options, mxml_io_cb_t io_cb, void *io_cbdata, mxml_node_t *node, _mxml_encoding_t *encoding, int *line);
|
||
static size_t mxml_read_cb_fd(int *fd, void *buffer, size_t bytes);
|
||
static size_t mxml_read_cb_file(FILE *fp, void *buffer, size_t bytes);
|
||
static size_t mxml_read_cb_string(_mxml_stringbuf_t *sb, void *buffer, size_t bytes);
|
||
static double mxml_strtod(mxml_options_t *options, const char *buffer, char **bufptr);
|
||
static size_t mxml_io_cb_fd(int *fd, void *buffer, size_t bytes);
|
||
static size_t mxml_io_cb_file(FILE *fp, void *buffer, size_t bytes);
|
||
static size_t mxml_io_cb_string(_mxml_stringbuf_t *sb, void *buffer, size_t bytes);
|
||
static int mxml_write_node(mxml_node_t *node, mxml_options_t *options, mxml_io_cb_t io_cb, void *io_cbdata, int col);
|
||
static int mxml_write_string(const char *s, mxml_io_cb_t io_cb, void *io_cbdata, bool use_entities, int col);
|
||
static int mxml_write_ws(mxml_node_t *node, mxml_options_t *options, mxml_io_cb_t io_cb, void *io_cbdata, mxml_ws_t ws, int col);
|
||
|
||
|
||
//
|
||
// 'mxmlLoadFd()' - Load a file descriptor into an XML node tree.
|
||
//
|
||
// This function loads the file descriptor `fd` into an XML node tree. The
|
||
// nodes in the specified file are added to the specified node `top` - if `NULL`
|
||
// the XML file MUST be well-formed with a single parent processing instruction
|
||
// node like `<?xml version="1.0"?>` at the start of the file.
|
||
//
|
||
// Load options are provides via the `options` argument. If `NULL`, all values
|
||
// will be loaded into `MXML_TYPE_TEXT` nodes. Use the @link mxmlOptionsNew@
|
||
// function to create options when loading XML data.
|
||
//
|
||
|
||
mxml_node_t * // O - First node or `NULL` if the file could not be read.
|
||
mxmlLoadFd(
|
||
mxml_node_t *top, // I - Top node
|
||
mxml_options_t *options, // I - Options
|
||
int fd) // I - File descriptor to read from
|
||
{
|
||
// Range check input...
|
||
if (fd < 0)
|
||
return (NULL);
|
||
|
||
// Read the XML data...
|
||
return (mxml_load_data(top, options, (mxml_io_cb_t)mxml_read_cb_fd, &fd));
|
||
}
|
||
|
||
|
||
//
|
||
// 'mxmlLoadFile()' - Load a file into an XML node tree.
|
||
//
|
||
// This function loads the `FILE` pointer `fp` into an XML node tree. The
|
||
// nodes in the specified file are added to the specified node `top` - if `NULL`
|
||
// the XML file MUST be well-formed with a single parent processing instruction
|
||
// node like `<?xml version="1.0"?>` at the start of the file.
|
||
//
|
||
// Load options are provides via the `options` argument. If `NULL`, all values
|
||
// will be loaded into `MXML_TYPE_TEXT` nodes. Use the @link mxmlOptionsNew@
|
||
// function to create options when loading XML data.
|
||
//
|
||
|
||
mxml_node_t * // O - First node or `NULL` if the file could not be read.
|
||
mxmlLoadFile(
|
||
mxml_node_t *top, // I - Top node
|
||
mxml_options_t *options, // I - Options
|
||
FILE *fp) // I - File to read from
|
||
{
|
||
// Range check input...
|
||
if (!fp)
|
||
return (NULL);
|
||
|
||
// Read the XML data...
|
||
return (mxml_load_data(top, options, (mxml_io_cb_t)mxml_read_cb_file, fp));
|
||
}
|
||
|
||
|
||
//
|
||
// 'mxmlLoadFilename()' - Load a file into an XML node tree.
|
||
//
|
||
// This function loads the named file `filename` into an XML node tree. The
|
||
// nodes in the specified file are added to the specified node `top` - if `NULL`
|
||
// the XML file MUST be well-formed with a single parent processing instruction
|
||
// node like `<?xml version="1.0"?>` at the start of the file.
|
||
//
|
||
// Load options are provides via the `options` argument. If `NULL`, all values
|
||
// will be loaded into `MXML_TYPE_TEXT` nodes. Use the @link mxmlOptionsNew@
|
||
// function to create options when loading XML data.
|
||
//
|
||
|
||
mxml_node_t * // O - First node or `NULL` if the file could not be read.
|
||
mxmlLoadFilename(
|
||
mxml_node_t *top, // I - Top node
|
||
mxml_options_t *options, // I - Options
|
||
const char *filename) // I - File to read from
|
||
{
|
||
FILE *fp; // File pointer
|
||
mxml_node_t *ret; // Node
|
||
|
||
|
||
// Range check input...
|
||
if (!filename)
|
||
return (NULL);
|
||
|
||
// Open the file...
|
||
if ((fp = fopen(filename, "r")) == NULL)
|
||
return (NULL);
|
||
|
||
// Read the XML data...
|
||
ret = mxml_load_data(top, options, (mxml_io_cb_t)mxml_read_cb_file, fp);
|
||
|
||
// Close the file and return...
|
||
fclose(fp);
|
||
|
||
return (ret);
|
||
}
|
||
|
||
|
||
//
|
||
// 'mxmlLoadIO()' - Load an XML node tree using a read callback.
|
||
//
|
||
// This function loads data into an XML node tree using a read callback. The
|
||
// nodes in the specified file are added to the specified node `top` - if `NULL`
|
||
// the XML file MUST be well-formed with a single parent processing instruction
|
||
// node like `<?xml version="1.0"?>` at the start of the file.
|
||
//
|
||
// Load options are provides via the `options` argument. If `NULL`, all values
|
||
// will be loaded into `MXML_TYPE_TEXT` nodes. Use the @link mxmlOptionsNew@
|
||
// function to create options when loading XML data.
|
||
//
|
||
// The read callback function `io_cb` is called to read a number of bytes from
|
||
// the source. The callback data pointer `io_cbdata` is passed to the read
|
||
// callback with a pointer to a buffer and the maximum number of bytes to read,
|
||
// for example:
|
||
//
|
||
// ```c
|
||
// size_t my_io_cb(void *cbdata, void *buffer, size_t bytes)
|
||
// {
|
||
// ... copy up to "bytes" bytes into buffer ...
|
||
// ... return the number of bytes "read" or 0 on error ...
|
||
// }
|
||
// ```
|
||
//
|
||
|
||
mxml_node_t * // O - First node or `NULL` if the file could not be read.
|
||
mxmlLoadIO(
|
||
mxml_node_t *top, // I - Top node
|
||
mxml_options_t *options, // I - Options
|
||
mxml_io_cb_t io_cb, // I - Read callback function
|
||
void *io_cbdata) // I - Read callback data
|
||
{
|
||
// Range check input...
|
||
if (!io_cb)
|
||
return (NULL);
|
||
|
||
// Read the XML data...
|
||
return (mxml_load_data(top, options, io_cb, io_cbdata));
|
||
}
|
||
|
||
|
||
//
|
||
// 'mxmlLoadString()' - Load a string into an XML node tree.
|
||
//
|
||
// This function loads the string into an XML node tree. The nodes in the
|
||
// specified file are added to the specified node `top` - if `NULL` the XML file
|
||
// MUST be well-formed with a single parent processing instruction node like
|
||
// `<?xml version="1.0"?>` at the start of the file.
|
||
//
|
||
// Load options are provides via the `options` argument. If `NULL`, all values
|
||
// will be loaded into `MXML_TYPE_TEXT` nodes. Use the @link mxmlOptionsNew@
|
||
// function to create options when loading XML data.
|
||
//
|
||
|
||
mxml_node_t * // O - First node or `NULL` if the string has errors.
|
||
mxmlLoadString(
|
||
mxml_node_t *top, // I - Top node
|
||
mxml_options_t *options, // I - Options
|
||
const char *s) // I - String to load
|
||
{
|
||
_mxml_stringbuf_t sb; // String buffer
|
||
|
||
|
||
// Range check input...
|
||
if (!s)
|
||
return (NULL);
|
||
|
||
// Setup string buffer...
|
||
sb.buffer = (char *)s;
|
||
sb.bufptr = (char *)s;
|
||
sb.bufsize = strlen(s);
|
||
sb.bufalloc = false;
|
||
|
||
// Read the XML data...
|
||
return (mxml_load_data(top, options, (mxml_io_cb_t)mxml_read_cb_string, &sb));
|
||
}
|
||
|
||
|
||
//
|
||
// 'mxmlSaveAllocString()' - Save an XML tree to an allocated string.
|
||
//
|
||
// This function saves the XML tree `node` to an allocated string. The string
|
||
// should be freed using `free` (or the string free callback set using
|
||
// @link mxmlSetStringCallbacks@) when you are done with it.
|
||
//
|
||
// `NULL` is returned if the node would produce an empty string or if the string
|
||
// cannot be allocated.
|
||
//
|
||
// Save options are provides via the `options` argument. If `NULL`, the XML
|
||
// output will be wrapped at column 72 with no additional whitespace. Use the
|
||
// @link mxmlOptionsNew@ function to create options for saving XML data.
|
||
//
|
||
|
||
char * // O - Allocated string or `NULL`
|
||
mxmlSaveAllocString(
|
||
mxml_node_t *node, // I - Node to write
|
||
mxml_options_t *options) // I - Options
|
||
{
|
||
_mxml_stringbuf_t sb; // String buffer
|
||
|
||
|
||
// Setup a string buffer
|
||
if ((sb.buffer = malloc(1024)) == NULL)
|
||
return (NULL);
|
||
|
||
sb.bufptr = sb.buffer;
|
||
sb.bufsize = 1024;
|
||
sb.bufalloc = true;
|
||
|
||
// Write the top node...
|
||
if (mxml_write_node(node, options, (mxml_io_cb_t)mxml_io_cb_string, &sb, 0) < 0)
|
||
{
|
||
free(sb.buffer);
|
||
return (NULL);
|
||
}
|
||
|
||
// Nul-terminate the string...
|
||
*(sb.bufptr) = '\0';
|
||
|
||
// Return the allocated string...
|
||
return (sb.buffer);
|
||
}
|
||
|
||
|
||
//
|
||
// 'mxmlSaveFd()' - Save an XML tree to a file descriptor.
|
||
//
|
||
// This function saves the XML tree `node` to a file descriptor.
|
||
//
|
||
// Save options are provides via the `options` argument. If `NULL`, the XML
|
||
// output will be wrapped at column 72 with no additional whitespace. Use the
|
||
// @link mxmlOptionsNew@ function to create options for saving XML data.
|
||
//
|
||
|
||
bool // O - `true` on success, `false` on error.
|
||
mxmlSaveFd(mxml_node_t *node, // I - Node to write
|
||
mxml_options_t *options, // I - Options
|
||
int fd) // I - File descriptor to write to
|
||
{
|
||
int col; // Final column
|
||
|
||
|
||
// Write the node...
|
||
if ((col = mxml_write_node(node, options, (mxml_io_cb_t)mxml_io_cb_fd, &fd, 0)) < 0)
|
||
return (false);
|
||
|
||
// Make sure the file ends with a newline...
|
||
if (col > 0)
|
||
{
|
||
if (write(fd, "\n", 1) < 0)
|
||
return (false);
|
||
}
|
||
|
||
return (true);
|
||
}
|
||
|
||
|
||
//
|
||
// 'mxmlSaveFile()' - Save an XML tree to a file.
|
||
//
|
||
// This function saves the XML tree `node` to a stdio `FILE`.
|
||
//
|
||
// Save options are provides via the `options` argument. If `NULL`, the XML
|
||
// output will be wrapped at column 72 with no additional whitespace. Use the
|
||
// @link mxmlOptionsNew@ function to create options for saving XML data.
|
||
//
|
||
|
||
bool // O - `true` on success, `false` on error.
|
||
mxmlSaveFile(
|
||
mxml_node_t *node, // I - Node to write
|
||
mxml_options_t *options, // I - Options
|
||
FILE *fp) // I - File to write to
|
||
{
|
||
int col; // Final column
|
||
|
||
|
||
// Write the node...
|
||
if ((col = mxml_write_node(node, options, (mxml_io_cb_t)mxml_io_cb_file, fp, 0)) < 0)
|
||
return (false);
|
||
|
||
// Make sure the file ends with a newline...
|
||
if (col > 0)
|
||
{
|
||
if (putc('\n', fp) < 0)
|
||
return (false);
|
||
}
|
||
|
||
return (true);
|
||
}
|
||
|
||
|
||
//
|
||
// 'mxmlSaveFilename()' - Save an XML tree to a file.
|
||
//
|
||
// This function saves the XML tree `node` to a named file.
|
||
//
|
||
// Save options are provides via the `options` argument. If `NULL`, the XML
|
||
// output will be wrapped at column 72 with no additional whitespace. Use the
|
||
// @link mxmlOptionsNew@ function to create options for saving XML data.
|
||
//
|
||
|
||
bool // O - `true` on success, `false` on error.
|
||
mxmlSaveFilename(
|
||
mxml_node_t *node, // I - Node to write
|
||
mxml_options_t *options, // I - Options
|
||
const char *filename) // I - File to write to
|
||
{
|
||
bool ret = true; // Return value
|
||
FILE *fp; // File pointer
|
||
int col; // Final column
|
||
|
||
|
||
// Open the file...
|
||
if ((fp = fopen(filename, "w")) == NULL)
|
||
return (false);
|
||
|
||
// Write the node...
|
||
if ((col = mxml_write_node(node, options, (mxml_io_cb_t)mxml_io_cb_file, fp, 0)) < 0)
|
||
{
|
||
ret = false;
|
||
}
|
||
else if (col > 0)
|
||
{
|
||
// Make sure the file ends with a newline...
|
||
if (putc('\n', fp) < 0)
|
||
ret = false;
|
||
}
|
||
|
||
fclose(fp);
|
||
|
||
return (ret);
|
||
}
|
||
|
||
|
||
//
|
||
// 'mxmlSaveIO()' - Save an XML tree using a callback.
|
||
//
|
||
// This function saves the XML tree `node` using a write callback function
|
||
// `io_cb`. The write callback is called with the callback data pointer
|
||
// `io_cbdata`, a buffer pointer, and the number of bytes to write, for
|
||
// example:
|
||
//
|
||
// ```c
|
||
// size_t my_io_cb(void *cbdata, const void *buffer, size_t bytes)
|
||
// {
|
||
// ... write/copy bytes from buffer to the output ...
|
||
// ... return the number of bytes written/copied or 0 on error ...
|
||
// }
|
||
// ```
|
||
//
|
||
// Save options are provides via the `options` argument. If `NULL`, the XML
|
||
// output will be wrapped at column 72 with no additional whitespace. Use the
|
||
// @link mxmlOptionsNew@ function to create options for saving XML data.
|
||
//
|
||
|
||
bool // O - `true` on success, `false` on error.
|
||
mxmlSaveIO(
|
||
mxml_node_t *node, // I - Node to write
|
||
mxml_options_t *options, // I - Options
|
||
mxml_io_cb_t io_cb, // I - Write callback function
|
||
void *io_cbdata) // I - Write callback data
|
||
{
|
||
int col; // Final column
|
||
|
||
|
||
// Range check input...
|
||
if (!node || !io_cb)
|
||
return (false);
|
||
|
||
// Write the node...
|
||
if ((col = mxml_write_node(node, options, io_cb, io_cbdata, 0)) < 0)
|
||
return (false);
|
||
|
||
if (col > 0)
|
||
{
|
||
// Make sure the file ends with a newline...
|
||
if ((io_cb)(io_cbdata, "\n", 1) != 1)
|
||
return (false);
|
||
}
|
||
|
||
return (true);
|
||
}
|
||
|
||
|
||
//
|
||
// 'mxmlSaveString()' - Save an XML node tree to a string.
|
||
//
|
||
// This function saves the XML tree `node` to a fixed-size string buffer.
|
||
//
|
||
// Save options are provides via the `options` argument. If `NULL`, the XML
|
||
// output will be wrapped at column 72 with no additional whitespace. Use the
|
||
// @link mxmlOptionsNew@ function to create options for saving XML data.
|
||
//
|
||
|
||
size_t // O - Size of string
|
||
mxmlSaveString(
|
||
mxml_node_t *node, // I - Node to write
|
||
mxml_options_t *options, // I - Options
|
||
char *buffer, // I - String buffer
|
||
size_t bufsize) // I - Size of string buffer
|
||
{
|
||
_mxml_stringbuf_t sb; // String buffer
|
||
|
||
|
||
// Setup the string buffer...
|
||
sb.buffer = buffer;
|
||
sb.bufptr = buffer;
|
||
sb.bufsize = bufsize;
|
||
sb.bufalloc = false;
|
||
|
||
// Write the node...
|
||
if (mxml_write_node(node, options, (mxml_io_cb_t)mxml_io_cb_string, &sb, 0) < 0)
|
||
return (false);
|
||
|
||
// Nul-terminate the string...
|
||
if (sb.bufptr < (sb.buffer + sb.bufsize))
|
||
*(sb.bufptr) = '\0';
|
||
|
||
// Return the number of characters...
|
||
return ((size_t)(sb.bufptr - sb.buffer));
|
||
}
|
||
|
||
|
||
//
|
||
// 'mxml_add_char()' - Add a character to a buffer, expanding as needed.
|
||
//
|
||
|
||
static bool // O - `true` on success, `false` on error
|
||
mxml_add_char(mxml_options_t *options, // I - Options
|
||
int ch, // I - Character to add
|
||
char **bufptr, // IO - Current position in buffer
|
||
char **buffer, // IO - Current buffer
|
||
size_t *bufsize) // IO - Current buffer size
|
||
{
|
||
char *newbuffer; // New buffer value
|
||
|
||
|
||
if (*bufptr >= (*buffer + *bufsize - 4))
|
||
{
|
||
// Increase the size of the buffer...
|
||
if (*bufsize < 1024)
|
||
(*bufsize) *= 2;
|
||
else
|
||
(*bufsize) += 1024;
|
||
|
||
if ((newbuffer = realloc(*buffer, *bufsize)) == NULL)
|
||
{
|
||
_mxml_error(options, "Unable to expand string buffer to %lu bytes.", (unsigned long)*bufsize);
|
||
|
||
return (false);
|
||
}
|
||
|
||
*bufptr = newbuffer + (*bufptr - *buffer);
|
||
*buffer = newbuffer;
|
||
}
|
||
|
||
if (ch < 0x80)
|
||
{
|
||
// Single byte ASCII...
|
||
*(*bufptr)++ = ch;
|
||
}
|
||
else if (ch < 0x800)
|
||
{
|
||
// Two-byte UTF-8...
|
||
*(*bufptr)++ = 0xc0 | (ch >> 6);
|
||
*(*bufptr)++ = 0x80 | (ch & 0x3f);
|
||
}
|
||
else if (ch < 0x10000)
|
||
{
|
||
// Three-byte UTF-8...
|
||
*(*bufptr)++ = 0xe0 | (ch >> 12);
|
||
*(*bufptr)++ = 0x80 | ((ch >> 6) & 0x3f);
|
||
*(*bufptr)++ = 0x80 | (ch & 0x3f);
|
||
}
|
||
else
|
||
{
|
||
// Four-byte UTF-8...
|
||
*(*bufptr)++ = 0xf0 | (ch >> 18);
|
||
*(*bufptr)++ = 0x80 | ((ch >> 12) & 0x3f);
|
||
*(*bufptr)++ = 0x80 | ((ch >> 6) & 0x3f);
|
||
*(*bufptr)++ = 0x80 | (ch & 0x3f);
|
||
}
|
||
|
||
return (true);
|
||
}
|
||
|
||
|
||
//
|
||
// 'mxml_get_entity()' - Get the character corresponding to an entity...
|
||
//
|
||
|
||
static int // O - Character value or `EOF` on error
|
||
mxml_get_entity(
|
||
mxml_options_t *options, // I - Options
|
||
mxml_io_cb_t io_cb, // I - Read callback function
|
||
void *io_cbdata, // I - Read callback data
|
||
_mxml_encoding_t *encoding, // IO - Character encoding
|
||
mxml_node_t *parent, // I - Parent node
|
||
int *line) // IO - Current line number
|
||
{
|
||
int ch; // Current character
|
||
char entity[64], // Entity string
|
||
*entptr; // Pointer into entity
|
||
|
||
|
||
// Read a HTML character entity of the form "&NAME;", "&#NUMBER;", or "&#xHEX"...
|
||
entptr = entity;
|
||
|
||
while ((ch = mxml_getc(options, io_cb, io_cbdata, encoding)) != EOF)
|
||
{
|
||
if (ch > 126 || (!isalnum(ch) && ch != '#'))
|
||
{
|
||
break;
|
||
}
|
||
else if (entptr < (entity + sizeof(entity) - 1))
|
||
{
|
||
*entptr++ = ch;
|
||
}
|
||
else
|
||
{
|
||
_mxml_error(options, "Entity name too long under parent <%s> on line %d.", mxmlGetElement(parent), *line);
|
||
break;
|
||
}
|
||
}
|
||
|
||
*entptr = '\0';
|
||
|
||
if (ch != ';')
|
||
{
|
||
_mxml_error(options, "Character entity '%s' not terminated under parent <%s> on line %d.", entity, mxmlGetElement(parent), *line);
|
||
|
||
if (ch == '\n')
|
||
(*line)++;
|
||
|
||
return (EOF);
|
||
}
|
||
|
||
if ((ch = _mxml_entity_value(options, entity)) < 0)
|
||
{
|
||
_mxml_error(options, "Entity '&%s;' not supported under parent <%s> on line %d.", entity, mxmlGetElement(parent), *line);
|
||
return (EOF);
|
||
}
|
||
|
||
if (mxml_bad_char(ch))
|
||
{
|
||
_mxml_error(options, "Bad control character 0x%02x under parent <%s> on line %d not allowed by XML standard.", ch, mxmlGetElement(parent), *line);
|
||
return (EOF);
|
||
}
|
||
|
||
return (ch);
|
||
}
|
||
|
||
|
||
//
|
||
// 'mxml_getc()' - Read a character from a file descriptor.
|
||
//
|
||
|
||
static int // O - Character or `EOF`
|
||
mxml_getc(mxml_options_t *options, // I - Options
|
||
mxml_io_cb_t io_cb, // I - Read callback function
|
||
void *io_cbdata, // I - Read callback data
|
||
_mxml_encoding_t *encoding) // IO - Encoding
|
||
{
|
||
int ch; // Current character
|
||
unsigned char buffer[4]; // Read buffer
|
||
|
||
|
||
// Grab the next character...
|
||
read_first_byte:
|
||
|
||
if ((io_cb)(io_cbdata, buffer, 1) != 1)
|
||
return (EOF);
|
||
|
||
ch = buffer[0];
|
||
|
||
switch (*encoding)
|
||
{
|
||
case _MXML_ENCODING_UTF8 :
|
||
// Got a UTF-8 character; convert UTF-8 to Unicode and return...
|
||
if (!(ch & 0x80))
|
||
{
|
||
// ASCII
|
||
break;
|
||
}
|
||
else if (ch == 0xfe)
|
||
{
|
||
// UTF-16 big-endian BOM?
|
||
if ((io_cb)(io_cbdata, buffer + 1, 1) != 1)
|
||
return (EOF);
|
||
|
||
if (buffer[1] != 0xff)
|
||
return (EOF);
|
||
|
||
// Yes, switch to UTF-16 BE and try reading again...
|
||
*encoding = _MXML_ENCODING_UTF16BE;
|
||
|
||
goto read_first_byte;
|
||
}
|
||
else if (ch == 0xff)
|
||
{
|
||
// UTF-16 little-endian BOM?
|
||
if ((io_cb)(io_cbdata, buffer + 1, 1) != 1)
|
||
return (EOF);
|
||
|
||
if (buffer[1] != 0xfe)
|
||
return (EOF);
|
||
|
||
// Yes, switch to UTF-16 LE and try reading again...
|
||
*encoding = _MXML_ENCODING_UTF16LE;
|
||
|
||
goto read_first_byte;
|
||
}
|
||
else if ((ch & 0xe0) == 0xc0)
|
||
{
|
||
// Two-byte value...
|
||
if ((io_cb)(io_cbdata, buffer + 1, 1) != 1)
|
||
return (EOF);
|
||
|
||
if ((buffer[1] & 0xc0) != 0x80)
|
||
return (EOF);
|
||
|
||
ch = ((ch & 0x1f) << 6) | (buffer[1] & 0x3f);
|
||
|
||
if (ch < 0x80)
|
||
{
|
||
_mxml_error(options, "Invalid UTF-8 sequence for character 0x%04x.", ch);
|
||
return (EOF);
|
||
}
|
||
}
|
||
else if ((ch & 0xf0) == 0xe0)
|
||
{
|
||
// Three-byte value...
|
||
if ((io_cb)(io_cbdata, buffer + 1, 2) != 2)
|
||
return (EOF);
|
||
|
||
if ((buffer[1] & 0xc0) != 0x80 || (buffer[2] & 0xc0) != 0x80)
|
||
return (EOF);
|
||
|
||
ch = ((ch & 0x0f) << 12) | ((buffer[1] & 0x3f) << 6) | (buffer[2] & 0x3f);
|
||
|
||
if (ch < 0x800)
|
||
{
|
||
_mxml_error(options, "Invalid UTF-8 sequence for character 0x%04x.", ch);
|
||
return (EOF);
|
||
}
|
||
|
||
// Ignore (strip) Byte Order Mark (BOM)...
|
||
if (ch == 0xfeff)
|
||
goto read_first_byte;
|
||
}
|
||
else if ((ch & 0xf8) == 0xf0)
|
||
{
|
||
// Four-byte value...
|
||
if ((io_cb)(io_cbdata, buffer + 1, 3) != 3)
|
||
return (EOF);
|
||
|
||
if ((buffer[1] & 0xc0) != 0x80 || (buffer[2] & 0xc0) != 0x80 || (buffer[3] & 0xc0) != 0x80)
|
||
return (EOF);
|
||
|
||
ch = ((ch & 0x07) << 18) | ((buffer[1] & 0x3f) << 12) | ((buffer[2] & 0x3f) << 6) | (buffer[3] & 0x3f);
|
||
|
||
if (ch < 0x10000)
|
||
{
|
||
_mxml_error(options, "Invalid UTF-8 sequence for character 0x%04x.", ch);
|
||
return (EOF);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
return (EOF);
|
||
}
|
||
break;
|
||
|
||
case _MXML_ENCODING_UTF16BE :
|
||
// Read UTF-16 big-endian char...
|
||
if ((io_cb)(io_cbdata, buffer + 1, 1) != 1)
|
||
return (EOF);
|
||
|
||
ch = (ch << 8) | buffer[1];
|
||
|
||
if (ch >= 0xd800 && ch <= 0xdbff)
|
||
{
|
||
// Multi-word UTF-16 char...
|
||
int lch; // Lower bits
|
||
|
||
if ((io_cb)(io_cbdata, buffer + 2, 2) != 2)
|
||
return (EOF);
|
||
|
||
lch = (buffer[2] << 8) | buffer[3];
|
||
|
||
if (lch < 0xdc00 || lch >= 0xdfff)
|
||
return (EOF);
|
||
|
||
ch = (((ch & 0x3ff) << 10) | (lch & 0x3ff)) + 0x10000;
|
||
}
|
||
break;
|
||
|
||
case _MXML_ENCODING_UTF16LE :
|
||
// Read UTF-16 little-endian char...
|
||
if ((io_cb)(io_cbdata, buffer + 1, 1) != 1)
|
||
return (EOF);
|
||
|
||
ch |= buffer[1] << 8;
|
||
|
||
if (ch >= 0xd800 && ch <= 0xdbff)
|
||
{
|
||
// Multi-word UTF-16 char...
|
||
int lch; // Lower bits
|
||
|
||
if ((io_cb)(io_cbdata, buffer + 2, 2) != 2)
|
||
return (EOF);
|
||
|
||
lch = (buffer[3] << 8) | buffer[2];
|
||
|
||
if (lch < 0xdc00 || lch >= 0xdfff)
|
||
return (EOF);
|
||
|
||
ch = (((ch & 0x3ff) << 10) | (lch & 0x3ff)) + 0x10000;
|
||
}
|
||
break;
|
||
}
|
||
|
||
if (mxml_bad_char(ch))
|
||
{
|
||
_mxml_error(options, "Bad control character 0x%02x not allowed by XML standard.", ch);
|
||
return (EOF);
|
||
}
|
||
|
||
return (ch);
|
||
}
|
||
|
||
|
||
//
|
||
// 'mxml_load_data()' - Load data into an XML node tree.
|
||
//
|
||
|
||
static mxml_node_t * // O - First node or `NULL` if the XML could not be read.
|
||
mxml_load_data(
|
||
mxml_node_t *top, // I - Top node
|
||
mxml_options_t *options, // I - Options
|
||
mxml_io_cb_t io_cb, // I - Read callback function
|
||
void *io_cbdata) // I - Read callback data
|
||
{
|
||
mxml_node_t *node = NULL, // Current node
|
||
*first = NULL, // First node added
|
||
*parent = NULL; // Current parent node
|
||
int line = 1, // Current line number
|
||
ch; // Character from file
|
||
bool whitespace = false; // Whitespace seen?
|
||
char *buffer, // String buffer
|
||
*bufptr; // Pointer into buffer
|
||
size_t bufsize; // Size of buffer
|
||
mxml_type_t type; // Current node type
|
||
_mxml_encoding_t encoding = _MXML_ENCODING_UTF8;
|
||
// Character encoding
|
||
static const char * const types[] = // Type strings...
|
||
{
|
||
"MXML_TYPE_CDATA", // CDATA
|
||
"MXML_TYPE_COMMENT", // Comment
|
||
"MXML_TYPE_DECLARATION",// Declaration
|
||
"MXML_TYPE_DIRECTIVE",// Processing instruction/directive
|
||
"MXML_TYPE_ELEMENT", // XML element with attributes
|
||
"MXML_TYPE_INTEGER", // Integer value
|
||
"MXML_TYPE_OPAQUE", // Opaque string
|
||
"MXML_TYPE_REAL", // Real value
|
||
"MXML_TYPE_TEXT", // Text fragment
|
||
"MXML_TYPE_CUSTOM" // Custom data
|
||
};
|
||
|
||
|
||
// Read elements and other nodes from the file...
|
||
if ((buffer = malloc(64)) == NULL)
|
||
{
|
||
_mxml_error(options, "Unable to allocate string buffer.");
|
||
return (NULL);
|
||
}
|
||
|
||
bufsize = 64;
|
||
bufptr = buffer;
|
||
parent = top;
|
||
first = NULL;
|
||
|
||
if (options && options->type_cb && parent)
|
||
type = (options->type_cb)(options->type_cbdata, parent);
|
||
else if (options && !options->type_cb)
|
||
type = options->type_value;
|
||
else
|
||
type = MXML_TYPE_IGNORE;
|
||
|
||
if ((ch = mxml_getc(options, io_cb, io_cbdata, &encoding)) == EOF)
|
||
{
|
||
free(buffer);
|
||
return (NULL);
|
||
}
|
||
else if (ch != '<' && !top)
|
||
{
|
||
free(buffer);
|
||
_mxml_error(options, "XML does not start with '<' (saw '%c').", ch);
|
||
return (NULL);
|
||
}
|
||
|
||
do
|
||
{
|
||
if ((ch == '<' || (mxml_isspace(ch) && type != MXML_TYPE_OPAQUE && type != MXML_TYPE_CUSTOM)) && bufptr > buffer)
|
||
{
|
||
// Add a new value node...
|
||
*bufptr = '\0';
|
||
|
||
switch (type)
|
||
{
|
||
case MXML_TYPE_INTEGER :
|
||
node = mxmlNewInteger(parent, strtol(buffer, &bufptr, 0));
|
||
break;
|
||
|
||
case MXML_TYPE_OPAQUE :
|
||
node = mxmlNewOpaque(parent, buffer);
|
||
break;
|
||
|
||
case MXML_TYPE_REAL :
|
||
node = mxmlNewReal(parent, mxml_strtod(options, buffer, &bufptr));
|
||
break;
|
||
|
||
case MXML_TYPE_TEXT :
|
||
node = mxmlNewText(parent, whitespace, buffer);
|
||
break;
|
||
|
||
case MXML_TYPE_CUSTOM :
|
||
if (options && options->custload_cb)
|
||
{
|
||
// Use the callback to fill in the custom data...
|
||
node = mxmlNewCustom(parent, /*data*/NULL, /*free_cb*/NULL, /*free_cbdata*/NULL);
|
||
|
||
if (!(options->custload_cb)(options->cust_cbdata, node, buffer))
|
||
{
|
||
_mxml_error(options, "Bad custom value '%s' in parent <%s> on line %d.", buffer, parent ? parent->value.element.name : "null", line);
|
||
mxmlDelete(node);
|
||
node = NULL;
|
||
}
|
||
break;
|
||
}
|
||
|
||
default : // Ignore...
|
||
node = NULL;
|
||
break;
|
||
}
|
||
|
||
if (*bufptr)
|
||
{
|
||
// Bad integer/real number value...
|
||
_mxml_error(options, "Bad %s value '%s' in parent <%s> on line %d.", type == MXML_TYPE_INTEGER ? "integer" : "real", buffer, parent ? parent->value.element.name : "null", line);
|
||
break;
|
||
}
|
||
|
||
MXML_DEBUG("mxml_load_data: node=%p(%s), parent=%p\n", node, buffer, parent);
|
||
|
||
bufptr = buffer;
|
||
whitespace = mxml_isspace(ch) && type == MXML_TYPE_TEXT;
|
||
|
||
if (!node && type != MXML_TYPE_IGNORE)
|
||
{
|
||
// Print error and return...
|
||
_mxml_error(options, "Unable to add value node of type %s to parent <%s> on line %d.", types[type], parent ? parent->value.element.name : "null", line);
|
||
goto error;
|
||
}
|
||
|
||
if (options && options->sax_cb)
|
||
{
|
||
if (!(options->sax_cb)(options->sax_cbdata, node, MXML_SAX_EVENT_DATA))
|
||
goto error;
|
||
|
||
if (!mxmlRelease(node))
|
||
node = NULL;
|
||
}
|
||
|
||
if (!first && node)
|
||
first = node;
|
||
}
|
||
else if (mxml_isspace(ch) && type == MXML_TYPE_TEXT)
|
||
{
|
||
whitespace = true;
|
||
}
|
||
|
||
if (ch == '\n')
|
||
line ++;
|
||
|
||
// Add lone whitespace node if we have an element and existing whitespace...
|
||
if (ch == '<' && whitespace && type == MXML_TYPE_TEXT)
|
||
{
|
||
if (parent)
|
||
{
|
||
node = mxmlNewText(parent, whitespace, "");
|
||
|
||
if (options && options->sax_cb)
|
||
{
|
||
if (!(options->sax_cb)(options->sax_cbdata, node, MXML_SAX_EVENT_DATA))
|
||
goto error;
|
||
|
||
if (!mxmlRelease(node))
|
||
node = NULL;
|
||
}
|
||
|
||
if (!first && node)
|
||
first = node;
|
||
}
|
||
|
||
whitespace = false;
|
||
}
|
||
|
||
if (ch == '<')
|
||
{
|
||
// Start of open/close tag...
|
||
bufptr = buffer;
|
||
|
||
while ((ch = mxml_getc(options, io_cb, io_cbdata, &encoding)) != EOF)
|
||
{
|
||
if (mxml_isspace(ch) || ch == '>' || (ch == '/' && bufptr > buffer))
|
||
{
|
||
break;
|
||
}
|
||
else if (ch == '<')
|
||
{
|
||
_mxml_error(options, "Bare < in element.");
|
||
goto error;
|
||
}
|
||
else if (ch == '&')
|
||
{
|
||
if ((ch = mxml_get_entity(options, io_cb, io_cbdata, &encoding, parent, &line)) == EOF)
|
||
goto error;
|
||
|
||
if (!mxml_add_char(options, ch, &bufptr, &buffer, &bufsize))
|
||
goto error;
|
||
}
|
||
else if (ch < '0' && ch != '!' && ch != '-' && ch != '.' && ch != '/')
|
||
{
|
||
goto error;
|
||
}
|
||
else if (!mxml_add_char(options, ch, &bufptr, &buffer, &bufsize))
|
||
{
|
||
goto error;
|
||
}
|
||
else if (((bufptr - buffer) == 1 && buffer[0] == '?') || ((bufptr - buffer) == 3 && !strncmp(buffer, "!--", 3)) || ((bufptr - buffer) == 8 && !strncmp(buffer, "![CDATA[", 8)))
|
||
{
|
||
break;
|
||
}
|
||
|
||
if (ch == '\n')
|
||
line ++;
|
||
}
|
||
|
||
*bufptr = '\0';
|
||
|
||
if (!strcmp(buffer, "!--"))
|
||
{
|
||
// Gather rest of comment...
|
||
while ((ch = mxml_getc(options, io_cb, io_cbdata, &encoding)) != EOF)
|
||
{
|
||
if (ch == '>' && bufptr > (buffer + 4) && bufptr[-3] != '-' && bufptr[-2] == '-' && bufptr[-1] == '-')
|
||
break;
|
||
else if (!mxml_add_char(options, ch, &bufptr, &buffer, &bufsize))
|
||
goto error;
|
||
|
||
if (ch == '\n')
|
||
line ++;
|
||
}
|
||
|
||
// Error out if we didn't get the whole comment...
|
||
if (ch != '>')
|
||
{
|
||
// Print error and return...
|
||
_mxml_error(options, "Early EOF in comment node on line %d.", line);
|
||
goto error;
|
||
}
|
||
|
||
// Otherwise add this as an element under the current parent...
|
||
bufptr[-2] = '\0';
|
||
|
||
if (!parent && first)
|
||
{
|
||
// There can only be one root element!
|
||
_mxml_error(options, "<%s--> cannot be a second root node after <%s> on line %d.", buffer, first->value.element.name, line);
|
||
goto error;
|
||
}
|
||
|
||
if ((node = mxmlNewComment(parent, buffer + 3)) == NULL)
|
||
{
|
||
// Just print error for now...
|
||
_mxml_error(options, "Unable to add comment node to parent <%s> on line %d.", parent ? parent->value.element.name : "null", line);
|
||
break;
|
||
}
|
||
|
||
MXML_DEBUG("mxml_load_data: node=%p(<%s-->), parent=%p\n", node, buffer, parent);
|
||
|
||
if (options && options->sax_cb)
|
||
{
|
||
if (!(options->sax_cb)(options->sax_cbdata, node, MXML_SAX_EVENT_COMMENT))
|
||
goto error;
|
||
|
||
if (!mxmlRelease(node))
|
||
node = NULL;
|
||
}
|
||
|
||
if (node && !first)
|
||
first = node;
|
||
}
|
||
else if (!strcmp(buffer, "![CDATA["))
|
||
{
|
||
// Gather CDATA section...
|
||
while ((ch = mxml_getc(options, io_cb, io_cbdata, &encoding)) != EOF)
|
||
{
|
||
if (ch == '>' && !strncmp(bufptr - 2, "]]", 2))
|
||
{
|
||
// Drop terminator from CDATA string...
|
||
bufptr[-2] = '\0';
|
||
break;
|
||
}
|
||
else if (!mxml_add_char(options, ch, &bufptr, &buffer, &bufsize))
|
||
{
|
||
goto error;
|
||
}
|
||
|
||
if (ch == '\n')
|
||
line ++;
|
||
}
|
||
|
||
// Error out if we didn't get the whole comment...
|
||
if (ch != '>')
|
||
{
|
||
// Print error and return...
|
||
_mxml_error(options, "Early EOF in CDATA node on line %d.", line);
|
||
goto error;
|
||
}
|
||
|
||
// Otherwise add this as an element under the current parent...
|
||
bufptr[-2] = '\0';
|
||
|
||
if (!parent && first)
|
||
{
|
||
// There can only be one root element!
|
||
_mxml_error(options, "<%s]]> cannot be a second root node after <%s> on line %d.", buffer, first->value.element.name, line);
|
||
goto error;
|
||
}
|
||
|
||
if ((node = mxmlNewCDATA(parent, buffer + 8)) == NULL)
|
||
{
|
||
// Print error and return...
|
||
_mxml_error(options, "Unable to add CDATA node to parent <%s> on line %d.", parent ? parent->value.element.name : "null", line);
|
||
goto error;
|
||
}
|
||
|
||
MXML_DEBUG("mxml_load_data: node=%p(<%s]]>), parent=%p\n", node, buffer, parent);
|
||
|
||
if (options && options->sax_cb)
|
||
{
|
||
if (!(options->sax_cb)(options->sax_cbdata, node, MXML_SAX_EVENT_CDATA))
|
||
goto error;
|
||
|
||
if (!mxmlRelease(node))
|
||
node = NULL;
|
||
}
|
||
|
||
if (node && !first)
|
||
first = node;
|
||
}
|
||
else if (buffer[0] == '?')
|
||
{
|
||
// Gather rest of processing instruction...
|
||
while ((ch = mxml_getc(options, io_cb, io_cbdata, &encoding)) != EOF)
|
||
{
|
||
if (ch == '>' && bufptr > buffer && bufptr[-1] == '?')
|
||
break;
|
||
else if (!mxml_add_char(options, ch, &bufptr, &buffer, &bufsize))
|
||
goto error;
|
||
|
||
if (ch == '\n')
|
||
line ++;
|
||
}
|
||
|
||
// Error out if we didn't get the whole processing instruction...
|
||
if (ch != '>')
|
||
{
|
||
// Print error and return...
|
||
_mxml_error(options, "Early EOF in processing instruction node on line %d.", line);
|
||
goto error;
|
||
}
|
||
|
||
// Otherwise add this as an element under the current parent...
|
||
bufptr[-1] = '\0';
|
||
|
||
if (!parent && first)
|
||
{
|
||
// There can only be one root element!
|
||
_mxml_error(options, "<%s?> cannot be a second root node after <%s> on line %d.", buffer, first->value.element.name, line);
|
||
goto error;
|
||
}
|
||
|
||
if ((node = mxmlNewDirective(parent, buffer + 1)) == NULL)
|
||
{
|
||
// Print error and return...
|
||
_mxml_error(options, "Unable to add processing instruction node to parent <%s> on line %d.", parent ? parent->value.element.name : "null", line);
|
||
goto error;
|
||
}
|
||
|
||
MXML_DEBUG("mxml_load_data: node=%p(<%s?>), parent=%p\n", node, buffer, parent);
|
||
|
||
if (options && options->sax_cb)
|
||
{
|
||
if (!(options->sax_cb)(options->sax_cbdata, node, MXML_SAX_EVENT_DIRECTIVE))
|
||
goto error;
|
||
|
||
if (strncmp(node->value.directive, "xml ", 4) && !mxmlRelease(node))
|
||
node = NULL;
|
||
}
|
||
|
||
if (node)
|
||
{
|
||
if (!first)
|
||
first = node;
|
||
|
||
if (!parent)
|
||
{
|
||
parent = node;
|
||
|
||
if (options && options->type_cb)
|
||
type = (options->type_cb)(options->type_cbdata, parent);
|
||
else if (options)
|
||
type = options->type_value;
|
||
else
|
||
type = MXML_TYPE_TEXT;
|
||
}
|
||
}
|
||
}
|
||
else if (buffer[0] == '!')
|
||
{
|
||
// Gather rest of declaration...
|
||
do
|
||
{
|
||
if (ch == '>')
|
||
{
|
||
break;
|
||
}
|
||
else
|
||
{
|
||
if (ch == '&')
|
||
{
|
||
if ((ch = mxml_get_entity(options, io_cb, io_cbdata, &encoding, parent, &line)) == EOF)
|
||
goto error;
|
||
}
|
||
|
||
if (!mxml_add_char(options, ch, &bufptr, &buffer, &bufsize))
|
||
goto error;
|
||
}
|
||
|
||
if (ch == '\n')
|
||
line ++;
|
||
}
|
||
while ((ch = mxml_getc(options, io_cb, io_cbdata, &encoding)) != EOF);
|
||
|
||
// Error out if we didn't get the whole declaration...
|
||
if (ch != '>')
|
||
{
|
||
// Print error and return...
|
||
_mxml_error(options, "Early EOF in declaration node on line %d.", line);
|
||
goto error;
|
||
}
|
||
|
||
// Otherwise add this as an element under the current parent...
|
||
*bufptr = '\0';
|
||
|
||
if (!parent && first)
|
||
{
|
||
// There can only be one root element!
|
||
_mxml_error(options, "<%s> cannot be a second root node after <%s> on line %d.", buffer, first->value.element.name, line);
|
||
goto error;
|
||
}
|
||
|
||
if ((node = mxmlNewDeclaration(parent, buffer + 1)) == NULL)
|
||
{
|
||
// Print error and return...
|
||
_mxml_error(options, "Unable to add declaration node to parent <%s> on line %d.", parent ? parent->value.element.name : "null", line);
|
||
goto error;
|
||
}
|
||
|
||
MXML_DEBUG("mxml_load_data: node=%p(<%s>), parent=%p\n", node, buffer, parent);
|
||
|
||
if (options && options->sax_cb)
|
||
{
|
||
if (!(options->sax_cb)(options->sax_cbdata, node, MXML_SAX_EVENT_DECLARATION))
|
||
goto error;
|
||
|
||
if (!mxmlRelease(node))
|
||
node = NULL;
|
||
}
|
||
|
||
if (node)
|
||
{
|
||
if (!first)
|
||
first = node;
|
||
|
||
if (!parent)
|
||
{
|
||
parent = node;
|
||
|
||
if (options && options->type_cb)
|
||
type = (options->type_cb)(options->type_cbdata, parent);
|
||
else if (options)
|
||
type = options->type_value;
|
||
else
|
||
type = MXML_TYPE_TEXT;
|
||
}
|
||
}
|
||
}
|
||
else if (buffer[0] == '/')
|
||
{
|
||
// Handle close tag...
|
||
MXML_DEBUG("mxml_load_data: <%s>, parent=%p\n", buffer, parent);
|
||
|
||
if (!parent || strcmp(buffer + 1, parent->value.element.name))
|
||
{
|
||
// Close tag doesn't match tree; print an error for now...
|
||
_mxml_error(options, "Mismatched close tag <%s> under parent <%s> on line %d.", buffer, parent ? parent->value.element.name : "(null)", line);
|
||
goto error;
|
||
}
|
||
|
||
// Keep reading until we see >...
|
||
while (ch != '>' && ch != EOF)
|
||
ch = mxml_getc(options, io_cb, io_cbdata, &encoding);
|
||
|
||
node = parent;
|
||
parent = parent->parent;
|
||
|
||
if (options && options->sax_cb)
|
||
{
|
||
if (!(options->sax_cb)(options->sax_cbdata, node, MXML_SAX_EVENT_ELEMENT_CLOSE))
|
||
goto error;
|
||
|
||
if (!mxmlRelease(node))
|
||
{
|
||
if (first == node)
|
||
first = NULL;
|
||
|
||
node = NULL;
|
||
}
|
||
}
|
||
|
||
// Ascend into the parent and set the value type as needed...
|
||
if (options && options->type_cb && parent)
|
||
type = (options->type_cb)(options->type_cbdata, parent);
|
||
else if (options && !options->type_cb)
|
||
type = options->type_value;
|
||
}
|
||
else
|
||
{
|
||
// Handle open tag...
|
||
if (!parent && first)
|
||
{
|
||
// There can only be one root element!
|
||
_mxml_error(options, "<%s> cannot be a second root node after <%s> on line %d.", buffer, first->value.element.name, line);
|
||
goto error;
|
||
}
|
||
|
||
if ((node = mxmlNewElement(parent, buffer)) == NULL)
|
||
{
|
||
// Just print error for now...
|
||
_mxml_error(options, "Unable to add element node to parent <%s> on line %d.", parent ? parent->value.element.name : "null", line);
|
||
goto error;
|
||
}
|
||
|
||
if (mxml_isspace(ch))
|
||
{
|
||
MXML_DEBUG("mxml_load_data: node=%p(<%s...>), parent=%p\n", node, buffer, parent);
|
||
|
||
if ((ch = mxml_parse_element(options, io_cb, io_cbdata, node, &encoding, &line)) == EOF)
|
||
goto error;
|
||
}
|
||
else if (ch == '/')
|
||
{
|
||
MXML_DEBUG("mxml_load_data: node=%p(<%s/>), parent=%p\n", node, buffer, parent);
|
||
|
||
if ((ch = mxml_getc(options, io_cb, io_cbdata, &encoding)) != '>')
|
||
{
|
||
_mxml_error(options, "Expected > but got '%c' instead for element <%s/> on line %d.", ch, buffer, line);
|
||
mxmlDelete(node);
|
||
node = NULL;
|
||
goto error;
|
||
}
|
||
|
||
ch = '/';
|
||
}
|
||
|
||
if (options && options->sax_cb)
|
||
{
|
||
if (!(options->sax_cb)(options->sax_cbdata, node, MXML_SAX_EVENT_ELEMENT_OPEN))
|
||
goto error;
|
||
}
|
||
|
||
if (!first)
|
||
first = node;
|
||
|
||
if (ch == EOF)
|
||
break;
|
||
|
||
if (ch != '/')
|
||
{
|
||
// Descend into this node, setting the value type as needed...
|
||
parent = node;
|
||
|
||
if (options && options->type_cb && parent)
|
||
type = (options->type_cb)(options->type_cbdata, parent);
|
||
else if (options && !options->type_cb)
|
||
type = options->type_value;
|
||
else
|
||
type = MXML_TYPE_TEXT;
|
||
}
|
||
else if (options && options->sax_cb)
|
||
{
|
||
if (!(options->sax_cb)(options->sax_cbdata, node, MXML_SAX_EVENT_ELEMENT_CLOSE))
|
||
goto error;
|
||
|
||
if (!mxmlRelease(node))
|
||
{
|
||
if (first == node)
|
||
first = NULL;
|
||
|
||
node = NULL;
|
||
}
|
||
}
|
||
}
|
||
|
||
bufptr = buffer;
|
||
}
|
||
else if (ch == '&')
|
||
{
|
||
// Add character entity to current buffer...
|
||
if ((ch = mxml_get_entity(options, io_cb, io_cbdata, &encoding, parent, &line)) == EOF)
|
||
goto error;
|
||
|
||
if (!mxml_add_char(options, ch, &bufptr, &buffer, &bufsize))
|
||
goto error;
|
||
}
|
||
else if (type == MXML_TYPE_OPAQUE || type == MXML_TYPE_CUSTOM || !mxml_isspace(ch))
|
||
{
|
||
// Add character to current buffer...
|
||
if (!mxml_add_char(options, ch, &bufptr, &buffer, &bufsize))
|
||
goto error;
|
||
}
|
||
}
|
||
while ((ch = mxml_getc(options, io_cb, io_cbdata, &encoding)) != EOF);
|
||
|
||
// Free the string buffer - we don't need it anymore...
|
||
free(buffer);
|
||
|
||
// Find the top element and return it...
|
||
if (parent)
|
||
{
|
||
node = parent;
|
||
|
||
while (parent != top && parent->parent)
|
||
parent = parent->parent;
|
||
|
||
if (node != parent)
|
||
{
|
||
_mxml_error(options, "Missing close tag </%s> under parent <%s> on line %d.", mxmlGetElement(node), node->parent ? node->parent->value.element.name : "(null)", line);
|
||
|
||
mxmlDelete(first);
|
||
|
||
return (NULL);
|
||
}
|
||
}
|
||
|
||
if (parent)
|
||
return (parent);
|
||
else
|
||
return (first);
|
||
|
||
// Common error return...
|
||
error:
|
||
|
||
mxmlDelete(first);
|
||
|
||
free(buffer);
|
||
|
||
return (NULL);
|
||
}
|
||
|
||
|
||
//
|
||
// 'mxml_parse_element()' - Parse an element for any attributes...
|
||
//
|
||
|
||
static int // O - Terminating character
|
||
mxml_parse_element(
|
||
mxml_options_t *options, // I - Options
|
||
mxml_io_cb_t io_cb, // I - Read callback function
|
||
void *io_cbdata, // I - Read callback data
|
||
mxml_node_t *node, // I - Element node
|
||
_mxml_encoding_t *encoding, // IO - Encoding
|
||
int *line) // IO - Current line number
|
||
{
|
||
int ch, // Current character in file
|
||
quote; // Quoting character
|
||
char *name, // Attribute name
|
||
*value, // Attribute value
|
||
*ptr; // Pointer into name/value
|
||
size_t namesize, // Size of name string
|
||
valsize; // Size of value string
|
||
|
||
|
||
// Initialize the name and value buffers...
|
||
if ((name = malloc(64)) == NULL)
|
||
{
|
||
_mxml_error(options, "Unable to allocate memory for name.");
|
||
return (EOF);
|
||
}
|
||
|
||
namesize = 64;
|
||
|
||
if ((value = malloc(64)) == NULL)
|
||
{
|
||
free(name);
|
||
_mxml_error(options, "Unable to allocate memory for value.");
|
||
return (EOF);
|
||
}
|
||
|
||
valsize = 64;
|
||
|
||
// Loop until we hit a >, /, ?, or EOF...
|
||
while ((ch = mxml_getc(options, io_cb, io_cbdata, encoding)) != EOF)
|
||
{
|
||
MXML_DEBUG("mxml_parse_element: ch='%c'\n", ch);
|
||
|
||
// Skip leading whitespace...
|
||
if (mxml_isspace(ch))
|
||
{
|
||
if (ch == '\n')
|
||
(*line)++;
|
||
|
||
continue;
|
||
}
|
||
|
||
// Stop at /, ?, or >...
|
||
if (ch == '/' || ch == '?')
|
||
{
|
||
// Grab the > character and print an error if it isn't there...
|
||
quote = mxml_getc(options, io_cb, io_cbdata, encoding);
|
||
|
||
if (quote != '>')
|
||
{
|
||
_mxml_error(options, "Expected '>' after '%c' for element %s, but got '%c' on line %d.", ch, mxmlGetElement(node), quote, *line);
|
||
goto error;
|
||
}
|
||
|
||
break;
|
||
}
|
||
else if (ch == '<')
|
||
{
|
||
_mxml_error(options, "Bare < in element %s on line %d.", mxmlGetElement(node), *line);
|
||
goto error;
|
||
}
|
||
else if (ch == '>')
|
||
{
|
||
break;
|
||
}
|
||
|
||
// Read the attribute name...
|
||
ptr = name;
|
||
if (!mxml_add_char(options, ch, &ptr, &name, &namesize))
|
||
goto error;
|
||
|
||
if (ch == '\"' || ch == '\'')
|
||
{
|
||
// Name is in quotes, so get a quoted string...
|
||
quote = ch;
|
||
|
||
while ((ch = mxml_getc(options, io_cb, io_cbdata, encoding)) != EOF)
|
||
{
|
||
if (ch == '&')
|
||
{
|
||
if ((ch = mxml_get_entity(options, io_cb, io_cbdata, encoding, node, line)) == EOF)
|
||
goto error;
|
||
}
|
||
else if (ch == '\n')
|
||
{
|
||
(*line)++;
|
||
}
|
||
|
||
if (!mxml_add_char(options, ch, &ptr, &name, &namesize))
|
||
goto error;
|
||
|
||
if (ch == quote)
|
||
break;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
// Grab an normal, non-quoted name...
|
||
while ((ch = mxml_getc(options, io_cb, io_cbdata, encoding)) != EOF)
|
||
{
|
||
if (mxml_isspace(ch) || ch == '=' || ch == '/' || ch == '>' || ch == '?')
|
||
{
|
||
if (ch == '\n')
|
||
(*line)++;
|
||
break;
|
||
}
|
||
else
|
||
{
|
||
if (ch == '&')
|
||
{
|
||
if ((ch = mxml_get_entity(options, io_cb, io_cbdata, encoding, node, line)) == EOF)
|
||
goto error;
|
||
}
|
||
|
||
if (!mxml_add_char(options, ch, &ptr, &name, &namesize))
|
||
goto error;
|
||
}
|
||
}
|
||
}
|
||
|
||
*ptr = '\0';
|
||
|
||
if (mxmlElementGetAttr(node, name))
|
||
{
|
||
_mxml_error(options, "Duplicate attribute '%s' in element %s on line %d.", name, mxmlGetElement(node), *line);
|
||
goto error;
|
||
}
|
||
|
||
while (ch != EOF && mxml_isspace(ch))
|
||
{
|
||
ch = mxml_getc(options, io_cb, io_cbdata, encoding);
|
||
|
||
if (ch == '\n')
|
||
(*line)++;
|
||
}
|
||
|
||
if (ch == '=')
|
||
{
|
||
// Read the attribute value...
|
||
while ((ch = mxml_getc(options, io_cb, io_cbdata, encoding)) != EOF && mxml_isspace(ch))
|
||
{
|
||
if (ch == '\n')
|
||
(*line)++;
|
||
}
|
||
|
||
if (ch == EOF)
|
||
{
|
||
_mxml_error(options, "Missing value for attribute '%s' in element %s on line %d.", name, mxmlGetElement(node), *line);
|
||
goto error;
|
||
}
|
||
|
||
if (ch == '\'' || ch == '\"')
|
||
{
|
||
// Read quoted value...
|
||
quote = ch;
|
||
ptr = value;
|
||
|
||
while ((ch = mxml_getc(options, io_cb, io_cbdata, encoding)) != EOF)
|
||
{
|
||
if (ch == quote)
|
||
{
|
||
break;
|
||
}
|
||
else
|
||
{
|
||
if (ch == '&')
|
||
{
|
||
if ((ch = mxml_get_entity(options, io_cb, io_cbdata, encoding, node, line)) == EOF)
|
||
goto error;
|
||
}
|
||
else if (ch == '\n')
|
||
{
|
||
(*line)++;
|
||
}
|
||
|
||
if (!mxml_add_char(options, ch, &ptr, &value, &valsize))
|
||
goto error;
|
||
}
|
||
}
|
||
|
||
*ptr = '\0';
|
||
}
|
||
else
|
||
{
|
||
// Read unquoted value...
|
||
ptr = value;
|
||
if (!mxml_add_char(options, ch, &ptr, &value, &valsize))
|
||
goto error;
|
||
|
||
while ((ch = mxml_getc(options, io_cb, io_cbdata, encoding)) != EOF)
|
||
{
|
||
if (mxml_isspace(ch) || ch == '=' || ch == '/' || ch == '>')
|
||
{
|
||
if (ch == '\n')
|
||
(*line)++;
|
||
|
||
break;
|
||
}
|
||
else
|
||
{
|
||
if (ch == '&')
|
||
{
|
||
if ((ch = mxml_get_entity(options, io_cb, io_cbdata, encoding, node, line)) == EOF)
|
||
goto error;
|
||
}
|
||
|
||
if (!mxml_add_char(options, ch, &ptr, &value, &valsize))
|
||
goto error;
|
||
}
|
||
}
|
||
|
||
*ptr = '\0';
|
||
}
|
||
|
||
// Set the attribute with the given string value...
|
||
mxmlElementSetAttr(node, name, value);
|
||
MXML_DEBUG("mxml_parse_element: %s=\"%s\"\n", name, value);
|
||
}
|
||
else
|
||
{
|
||
_mxml_error(options, "Missing value for attribute '%s' in element %s on line %d.", name, mxmlGetElement(node), *line);
|
||
goto error;
|
||
}
|
||
|
||
// Check the end character...
|
||
if (ch == '/' || ch == '?')
|
||
{
|
||
// Grab the > character and print an error if it isn't there...
|
||
quote = mxml_getc(options, io_cb, io_cbdata, encoding);
|
||
|
||
if (quote != '>')
|
||
{
|
||
_mxml_error(options, "Expected '>' after '%c' for element %s, but got '%c' on line %d.", ch, mxmlGetElement(node), quote, *line);
|
||
ch = EOF;
|
||
}
|
||
|
||
break;
|
||
}
|
||
else if (ch == '>')
|
||
break;
|
||
}
|
||
|
||
// Free the name and value buffers and return...
|
||
free(name);
|
||
free(value);
|
||
|
||
return (ch);
|
||
|
||
// Common error return point...
|
||
error:
|
||
|
||
free(name);
|
||
free(value);
|
||
|
||
return (EOF);
|
||
}
|
||
|
||
|
||
//
|
||
// 'mxml_read_cb_fd()' - Read bytes from a file descriptor.
|
||
//
|
||
|
||
static size_t // O - Bytes read
|
||
mxml_read_cb_fd(int *fd, // I - File descriptor
|
||
void *buffer, // I - Buffer
|
||
size_t bytes) // I - Bytes to read
|
||
{
|
||
#if _WIN32
|
||
int rbytes; // Bytes read
|
||
|
||
|
||
rbytes = read(*fd, buffer, bytes);
|
||
|
||
#else
|
||
ssize_t rbytes; // Bytes read
|
||
|
||
|
||
while ((rbytes = read(*fd, buffer, bytes)) < 0)
|
||
{
|
||
if (errno != EINTR && errno != EAGAIN)
|
||
break;
|
||
}
|
||
#endif // _WIN32
|
||
|
||
if (rbytes < 0)
|
||
return (0);
|
||
else
|
||
return ((size_t)rbytes);
|
||
}
|
||
|
||
|
||
//
|
||
// 'mxml_read_cb_file()' - Read bytes from a file pointer.
|
||
//
|
||
|
||
static size_t // O - Bytes read
|
||
mxml_read_cb_file(FILE *fp, // I - File pointer
|
||
void *buffer, // I - Buffer
|
||
size_t bytes) // I - Bytes to read
|
||
{
|
||
if (feof(fp))
|
||
return (0);
|
||
else
|
||
return (fread(buffer, 1, bytes, fp));
|
||
}
|
||
|
||
|
||
//
|
||
// 'mxml_read_cb_string()' - Read bytes from a string.
|
||
//
|
||
|
||
static size_t // O - Bytes read
|
||
mxml_read_cb_string(
|
||
_mxml_stringbuf_t *sb, // I - String buffer
|
||
void *buffer, // I - Buffer
|
||
size_t bytes) // I - Bytes to read
|
||
{
|
||
size_t remaining; // Remaining bytes in buffer
|
||
|
||
|
||
if ((remaining = sb->bufsize - (size_t)(sb->bufptr - sb->buffer)) < bytes)
|
||
bytes = remaining;
|
||
|
||
if (bytes > 0)
|
||
{
|
||
// Copy bytes from string...
|
||
memcpy(buffer, sb->bufptr, bytes);
|
||
sb->bufptr += bytes;
|
||
}
|
||
|
||
return (bytes);
|
||
}
|
||
|
||
|
||
//
|
||
// 'mxml_strtod()' - Convert a string to a double without respect to the locale.
|
||
//
|
||
|
||
static double // O - Real number
|
||
mxml_strtod(mxml_options_t *options, // I - Options
|
||
const char *buffer, // I - String
|
||
char **bufend) // O - End of number in string
|
||
{
|
||
const char *bufptr; // Pointer into buffer
|
||
char temp[64], // Temporary buffer
|
||
*tempptr; // Pointer into temporary buffer
|
||
|
||
|
||
// See if the locale has a special decimal point string...
|
||
if (!options || !options->loc)
|
||
return (strtod(buffer, bufend));
|
||
|
||
// Copy leading sign, numbers, period, and then numbers...
|
||
tempptr = temp;
|
||
temp[sizeof(temp) - 1] = '\0';
|
||
bufptr = buffer;
|
||
|
||
if (*bufptr == '-' || *bufptr == '+')
|
||
*tempptr++ = *bufptr++;
|
||
|
||
while (*bufptr && isdigit(*bufptr & 255))
|
||
{
|
||
if (tempptr < (temp + sizeof(temp) - 1))
|
||
{
|
||
*tempptr++ = *bufptr++;
|
||
}
|
||
else
|
||
{
|
||
*bufend = (char *)bufptr;
|
||
return (0.0);
|
||
}
|
||
}
|
||
|
||
if (*bufptr == '.')
|
||
{
|
||
// Convert decimal point to locale equivalent...
|
||
size_t declen = strlen(options->loc->decimal_point);
|
||
// Length of decimal point
|
||
bufptr ++;
|
||
|
||
if (declen <= (sizeof(temp) - (size_t)(tempptr - temp)))
|
||
{
|
||
memcpy(tempptr, options->loc->decimal_point, declen);
|
||
tempptr += declen;
|
||
}
|
||
else
|
||
{
|
||
*bufend = (char *)bufptr;
|
||
return (0.0);
|
||
}
|
||
}
|
||
|
||
// Copy any remaining characters...
|
||
while (*bufptr && isdigit(*bufptr & 255))
|
||
{
|
||
if (tempptr < (temp + sizeof(temp) - 1))
|
||
*tempptr++ = *bufptr++;
|
||
else
|
||
break;
|
||
}
|
||
|
||
*bufend = (char *)bufptr;
|
||
|
||
if (*bufptr)
|
||
return (0.0);
|
||
|
||
// Nul-terminate the temporary string and convert the string...
|
||
*tempptr = '\0';
|
||
|
||
return (strtod(temp, NULL));
|
||
}
|
||
|
||
|
||
//
|
||
// 'mxml_io_cb_fd()' - Write bytes to a file descriptor.
|
||
//
|
||
|
||
static size_t // O - Bytes written
|
||
mxml_io_cb_fd(int *fd, // I - File descriptor
|
||
void *buffer, // I - Buffer
|
||
size_t bytes) // I - Bytes to write
|
||
{
|
||
#if _WIN32
|
||
int wbytes; // Bytes written
|
||
|
||
|
||
wbytes = write(*fd, buffer, bytes);
|
||
|
||
#else
|
||
ssize_t wbytes; // Bytes written
|
||
|
||
|
||
while ((wbytes = write(*fd, buffer, bytes)) < 0)
|
||
{
|
||
if (errno != EINTR && errno != EAGAIN)
|
||
break;
|
||
}
|
||
#endif // _WIN32
|
||
|
||
if (wbytes < 0)
|
||
return (0);
|
||
else
|
||
return ((size_t)wbytes);
|
||
}
|
||
|
||
|
||
//
|
||
// 'mxml_io_cb_file()' - Write bytes to a file pointer.
|
||
//
|
||
|
||
static size_t // O - Bytes written
|
||
mxml_io_cb_file(FILE *fp, // I - File pointer
|
||
void *buffer, // I - Buffer
|
||
size_t bytes) // I - Bytes to write
|
||
{
|
||
return (fwrite(buffer, 1, bytes, fp));
|
||
}
|
||
|
||
|
||
//
|
||
// 'mxml_io_cb_string()' - Write bytes to a string buffer.
|
||
//
|
||
|
||
static size_t // O - Bytes written
|
||
mxml_io_cb_string(
|
||
_mxml_stringbuf_t *sb, // I - String buffer
|
||
void *buffer, // I - Buffer
|
||
size_t bytes) // I - Bytes to write
|
||
{
|
||
size_t remaining; // Remaining bytes
|
||
|
||
|
||
// Expand buffer as needed...
|
||
if ((sb->bufptr + bytes) >= (sb->buffer + sb->bufsize - 1) && sb->bufalloc)
|
||
{
|
||
// Reallocate buffer
|
||
char *temp; // New buffer pointer
|
||
size_t newsize; // New bufsize
|
||
|
||
newsize = (size_t)(sb->bufptr - sb->buffer) + bytes + 257;
|
||
if ((temp = realloc(sb->buffer, newsize)) == NULL)
|
||
return (0);
|
||
|
||
sb->bufptr = temp + (sb->bufptr - sb->buffer);
|
||
sb->buffer = temp;
|
||
sb->bufsize = newsize;
|
||
}
|
||
|
||
// Copy what we can...
|
||
if (sb->bufptr >= (sb->buffer + sb->bufsize - 1))
|
||
return (0); // No more room
|
||
else if ((remaining = (sb->bufsize - (size_t)(sb->bufptr - sb->buffer) - 1)) < bytes)
|
||
bytes = remaining;
|
||
|
||
memcpy(sb->bufptr, buffer, bytes);
|
||
sb->bufptr += bytes;
|
||
|
||
return (bytes);
|
||
}
|
||
|
||
|
||
//
|
||
// 'mxml_write_node()' - Save an XML node to a file.
|
||
//
|
||
|
||
static int // O - Column or -1 on error
|
||
mxml_write_node(
|
||
mxml_node_t *node, // I - Node to write
|
||
mxml_options_t *options, // I - Options
|
||
mxml_io_cb_t io_cb, // I - Write callback function
|
||
void *io_cbdata, // I - Write callback data
|
||
int col) // I - Current column
|
||
{
|
||
mxml_node_t *current, // Current node
|
||
*next; // Next node
|
||
size_t i, // Looping var
|
||
width; // Width of attr + value
|
||
_mxml_attr_t *attr; // Current attribute
|
||
char s[255], // Temporary string
|
||
*data; // Custom data string
|
||
const char *text; // Text string
|
||
bool whitespace; // Whitespace before text string?
|
||
|
||
|
||
// Loop through this node and all of its children...
|
||
for (current = node; current && col >= 0; current = next)
|
||
{
|
||
// Print the node value...
|
||
MXML_DEBUG("mxml_write_node: current=%p(%d)\n", current, current->type);
|
||
|
||
switch (mxmlGetType(current))
|
||
{
|
||
case MXML_TYPE_CDATA :
|
||
col = mxml_write_ws(current, options, io_cb, io_cbdata, MXML_WS_BEFORE_OPEN, col);
|
||
col = mxml_write_string("<![CDATA[", io_cb, io_cbdata, /*use_entities*/false, col);
|
||
col = mxml_write_string(mxmlGetCDATA(current), io_cb, io_cbdata, /*use_entities*/false, col);
|
||
col = mxml_write_string("]]>", io_cb, io_cbdata, /*use_entities*/false, col);
|
||
col = mxml_write_ws(current, options, io_cb, io_cbdata, MXML_WS_AFTER_OPEN, col);
|
||
break;
|
||
|
||
case MXML_TYPE_COMMENT :
|
||
col = mxml_write_ws(current, options, io_cb, io_cbdata, MXML_WS_BEFORE_OPEN, col);
|
||
col = mxml_write_string("<!--", io_cb, io_cbdata, /*use_entities*/false, col);
|
||
col = mxml_write_string(mxmlGetComment(current), io_cb, io_cbdata, /*use_entities*/false, col);
|
||
col = mxml_write_string("-->", io_cb, io_cbdata, /*use_entities*/false, col);
|
||
col = mxml_write_ws(current, options, io_cb, io_cbdata, MXML_WS_AFTER_OPEN, col);
|
||
break;
|
||
|
||
case MXML_TYPE_DECLARATION :
|
||
col = mxml_write_ws(current, options, io_cb, io_cbdata, MXML_WS_BEFORE_OPEN, col);
|
||
col = mxml_write_string("<!", io_cb, io_cbdata, /*use_entities*/false, col);
|
||
col = mxml_write_string(mxmlGetDeclaration(current), io_cb, io_cbdata, /*use_entities*/false, col);
|
||
col = mxml_write_string(">", io_cb, io_cbdata, /*use_entities*/false, col);
|
||
col = mxml_write_ws(current, options, io_cb, io_cbdata, MXML_WS_AFTER_OPEN, col);
|
||
break;
|
||
|
||
case MXML_TYPE_DIRECTIVE :
|
||
col = mxml_write_ws(current, options, io_cb, io_cbdata, MXML_WS_BEFORE_OPEN, col);
|
||
col = mxml_write_string("<?", io_cb, io_cbdata, /*use_entities*/false, col);
|
||
col = mxml_write_string(mxmlGetDirective(current), io_cb, io_cbdata, /*use_entities*/false, col);
|
||
col = mxml_write_string("?>", io_cb, io_cbdata, /*use_entities*/false, col);
|
||
col = mxml_write_ws(current, options, io_cb, io_cbdata, MXML_WS_AFTER_OPEN, col);
|
||
break;
|
||
|
||
case MXML_TYPE_ELEMENT :
|
||
col = mxml_write_ws(current, options, io_cb, io_cbdata, MXML_WS_BEFORE_OPEN, col);
|
||
col = mxml_write_string("<", io_cb, io_cbdata, /*use_entities*/false, col);
|
||
col = mxml_write_string(mxmlGetElement(current), io_cb, io_cbdata, /*use_entities*/true, col);
|
||
|
||
for (i = current->value.element.num_attrs, attr = current->value.element.attrs; i > 0 && col >= 0; i --, attr ++)
|
||
{
|
||
width = strlen(attr->name);
|
||
|
||
if (attr->value)
|
||
width += strlen(attr->value) + 3;
|
||
|
||
if (options && options->wrap > 0 && (col + (int)width) > options->wrap)
|
||
col = mxml_write_string("\n", io_cb, io_cbdata, /*use_entities*/false, col);
|
||
else
|
||
col = mxml_write_string(" ", io_cb, io_cbdata, /*use_entities*/false, col);
|
||
|
||
col = mxml_write_string(attr->name, io_cb, io_cbdata, /*use_entities*/true, col);
|
||
|
||
if (attr->value)
|
||
{
|
||
col = mxml_write_string("=\"", io_cb, io_cbdata, /*use_entities*/false, col);
|
||
col = mxml_write_string(attr->value, io_cb, io_cbdata, /*use_entities*/true, col);
|
||
col = mxml_write_string("\"", io_cb, io_cbdata, /*use_entities*/false, col);
|
||
}
|
||
}
|
||
|
||
col = mxml_write_string(current->child ? ">" : "/>", io_cb, io_cbdata, /*use_entities*/false, col);
|
||
col = mxml_write_ws(current, options, io_cb, io_cbdata, MXML_WS_AFTER_OPEN, col);
|
||
break;
|
||
|
||
case MXML_TYPE_INTEGER :
|
||
if (current->prev)
|
||
{
|
||
// Add whitespace separator...
|
||
if (options && options->wrap > 0 && col > options->wrap)
|
||
col = mxml_write_string("\n", io_cb, io_cbdata, /*use_entities*/false, col);
|
||
else
|
||
col = mxml_write_string(" ", io_cb, io_cbdata, /*use_entities*/false, col);
|
||
}
|
||
|
||
// Write integer...
|
||
snprintf(s, sizeof(s), "%ld", current->value.integer);
|
||
col = mxml_write_string(s, io_cb, io_cbdata, /*use_entities*/true, col);
|
||
break;
|
||
|
||
case MXML_TYPE_OPAQUE :
|
||
col = mxml_write_string(mxmlGetOpaque(current), io_cb, io_cbdata, /*use_entities*/true, col);
|
||
break;
|
||
|
||
case MXML_TYPE_REAL :
|
||
if (current->prev)
|
||
{
|
||
// Add whitespace separator...
|
||
if (options && options->wrap > 0 && col > options->wrap)
|
||
col = mxml_write_string("\n", io_cb, io_cbdata, /*use_entities*/false, col);
|
||
else
|
||
col = mxml_write_string(" ", io_cb, io_cbdata, /*use_entities*/false, col);
|
||
}
|
||
|
||
// Write real number...
|
||
snprintf(s, sizeof(s), "%g", current->value.real);
|
||
|
||
if (options && options->loc)
|
||
{
|
||
char *sptr; // Pointer into string
|
||
|
||
if ((sptr = strstr(s, options->loc->decimal_point)) != NULL)
|
||
{
|
||
// Convert locale decimal point to "."
|
||
if (options->loc_declen > 1)
|
||
memmove(sptr + 1, sptr + options->loc_declen, strlen(sptr + options->loc_declen) + 1);
|
||
|
||
*sptr = '.';
|
||
}
|
||
}
|
||
|
||
col = mxml_write_string(s, io_cb, io_cbdata, /*use_entities*/true, col);
|
||
break;
|
||
|
||
case MXML_TYPE_TEXT :
|
||
text = mxmlGetText(current, &whitespace);
|
||
|
||
if (whitespace && col > 0)
|
||
{
|
||
// Add whitespace separator...
|
||
if (options && options->wrap > 0 && col > options->wrap)
|
||
col = mxml_write_string("\n", io_cb, io_cbdata, /*use_entities*/false, col);
|
||
else
|
||
col = mxml_write_string(" ", io_cb, io_cbdata, /*use_entities*/false, col);
|
||
}
|
||
|
||
col = mxml_write_string(text, io_cb, io_cbdata, /*use_entities*/true, col);
|
||
break;
|
||
|
||
case MXML_TYPE_CUSTOM :
|
||
if (!options || !options->custsave_cb)
|
||
return (-1);
|
||
|
||
if ((data = (options->custsave_cb)(options->cust_cbdata, current)) == NULL)
|
||
return (-1);
|
||
|
||
col = mxml_write_string(data, io_cb, io_cbdata, /*use_entities*/true, col);
|
||
|
||
free(data);
|
||
break;
|
||
|
||
default : // Should never happen
|
||
return (-1);
|
||
}
|
||
|
||
// Figure out the next node...
|
||
if ((next = mxmlGetFirstChild(current)) == NULL)
|
||
{
|
||
if (current == node)
|
||
{
|
||
// Don't traverse to sibling node if we are at the "root" node...
|
||
next = NULL;
|
||
}
|
||
else
|
||
{
|
||
// Try the next sibling, and continue traversing upwards as needed...
|
||
while ((next = mxmlGetNextSibling(current)) == NULL)
|
||
{
|
||
if (current == node || !mxmlGetParent(current))
|
||
break;
|
||
|
||
// Declarations and directives have no end tags...
|
||
current = mxmlGetParent(current);
|
||
|
||
if (mxmlGetType(current) == MXML_TYPE_ELEMENT)
|
||
{
|
||
col = mxml_write_ws(current, options, io_cb, io_cbdata, MXML_WS_BEFORE_CLOSE, col);
|
||
col = mxml_write_string("</", io_cb, io_cbdata, /*use_entities*/false, col);
|
||
col = mxml_write_string(mxmlGetElement(current), io_cb, io_cbdata, /*use_entities*/true, col);
|
||
col = mxml_write_string(">", io_cb, io_cbdata, /*use_entities*/false, col);
|
||
col = mxml_write_ws(current, options, io_cb, io_cbdata, MXML_WS_AFTER_CLOSE, col);
|
||
}
|
||
|
||
if (current == node)
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
return (col);
|
||
}
|
||
|
||
|
||
//
|
||
// 'mxml_write_string()' - Write a string, escaping & and < as needed.
|
||
//
|
||
|
||
static int // O - New column or `-1` on error
|
||
mxml_write_string(
|
||
const char *s, // I - String to write
|
||
mxml_io_cb_t io_cb, // I - Write callback function
|
||
void *io_cbdata, // I - Write callback data
|
||
bool use_entities, // I - Escape special characters?
|
||
int col) // I - Current column
|
||
{
|
||
const char *frag, // Start of current string fragment
|
||
*ptr, // Pointer into string
|
||
*ent; // Entity, if any
|
||
size_t fraglen; // Length of fragment
|
||
|
||
|
||
MXML_DEBUG("mxml_write_string(io_cb=%p, io_cbdata=%p, s=\"%s\", use_entities=%s, col=%d)\n", io_cb, io_cbdata, s, use_entities ? "true" : "false", col);
|
||
|
||
if (col < 0)
|
||
return (-1);
|
||
|
||
for (frag = ptr = s; *ptr; ptr ++)
|
||
{
|
||
if (use_entities && (ent = _mxml_entity_string(*ptr)) != NULL)
|
||
{
|
||
size_t entlen = strlen(ent); // Length of entity
|
||
|
||
if (ptr > frag)
|
||
{
|
||
// Write current fragment
|
||
fraglen = (size_t)(ptr - frag);
|
||
|
||
if ((io_cb)(io_cbdata, (char *)frag, fraglen) != fraglen)
|
||
return (-1);
|
||
}
|
||
|
||
frag = ptr + 1;
|
||
|
||
// Write entity
|
||
if ((io_cb)(io_cbdata, (char *)ent, entlen) != entlen)
|
||
return (-1);
|
||
|
||
col ++;
|
||
}
|
||
else if (*ptr == '\r' || *ptr == '\n')
|
||
{
|
||
// CR or LF resets column
|
||
col = 0;
|
||
}
|
||
else if (*ptr == '\t')
|
||
{
|
||
// Tab indents column
|
||
col = col - (col % MXML_TAB) + MXML_TAB;
|
||
}
|
||
else
|
||
{
|
||
// All other characters are 1 column wide
|
||
col ++;
|
||
}
|
||
}
|
||
|
||
if (ptr > frag)
|
||
{
|
||
// Write final fragment
|
||
fraglen = (size_t)(ptr - frag);
|
||
|
||
if ((io_cb)(io_cbdata, (char *)frag, fraglen) != fraglen)
|
||
return (-1);
|
||
}
|
||
|
||
return (col);
|
||
}
|
||
|
||
|
||
//
|
||
// 'mxml_write_ws()' - Do whitespace callback...
|
||
//
|
||
|
||
static int // O - New column or `-1` on error
|
||
mxml_write_ws(
|
||
mxml_node_t *node, // I - Current node
|
||
mxml_options_t *options, // I - Options
|
||
mxml_io_cb_t io_cb, // I - Write callback function
|
||
void *io_cbdata, // I - Write callback data
|
||
mxml_ws_t ws, // I - Whitespace value
|
||
int col) // I - Current column
|
||
{
|
||
const char *s; // Whitespace string
|
||
|
||
|
||
if (options && options->ws_cb && (s = (options->ws_cb)(options->ws_cbdata, node, ws)) != NULL)
|
||
col = mxml_write_string(s, io_cb, io_cbdata, /*use_entities*/false, col);
|
||
|
||
return (col);
|
||
}
|