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asterisk/mxml/mxml-file.c

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/*
* "$Id$"
*
* File loading code for Mini-XML, a small XML-like file parsing library.
*
* Copyright 2003-2005 by Michael Sweet.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* Contents:
*
* mxmlLoadFd() - Load a file descriptor into an XML node tree.
* mxmlLoadFile() - Load a file into an XML node tree.
* mxmlLoadString() - Load a string into an XML node tree.
* mxmlSaveAllocString() - Save an XML node tree to an allocated string.
* mxmlSaveFd() - Save an XML tree to a file descriptor.
* mxmlSaveFile() - Save an XML tree to a file.
* mxmlSaveString() - Save an XML node tree to a string.
* mxmlSetCustomHandlers() - Set the handling functions for custom data.
* mxmlSetErrorCallback() - Set the error message callback.
* mxml_add_char() - Add a character to a buffer, expanding as needed.
* mxml_fd_getc() - Read a character from a file descriptor.
* mxml_fd_putc() - Write a character to a file descriptor.
* mxml_fd_read() - Read a buffer of data from a file descriptor.
* mxml_fd_write() - Write a buffer of data to a file descriptor.
* mxml_file_getc() - Get a character from a file.
* mxml_file_putc() - Write a character to a file.
* mxml_get_entity() - Get the character corresponding to an entity...
* mxml_load_data() - Load data into an XML node tree.
* mxml_parse_element() - Parse an element for any attributes...
* mxml_string_getc() - Get a character from a string.
* mxml_string_putc() - Write a character to a string.
* mxml_write_name() - Write a name string.
* mxml_write_node() - Save an XML node to a file.
* mxml_write_string() - Write a string, escaping & and < as needed.
* mxml_write_ws() - Do whitespace callback...
*/
/*
* Include necessary headers...
*/
#include "config.h"
#include "mxml.h"
#ifdef WIN32
# include <io.h>
#else
# include <unistd.h>
#endif /* WIN32 */
/*
* Character encoding...
*/
#define ENCODE_UTF8 0 /* UTF-8 */
#define ENCODE_UTF16BE 1 /* UTF-16 Big-Endian */
#define ENCODE_UTF16LE 2 /* UTF-16 Little-Endian */
/*
* Macro to test for a bad XML character...
*/
#define mxml_bad_char(ch) ((ch) < ' ' && (ch) != '\n' && (ch) != '\r' && (ch) != '\t')
/*
* Structures...
*/
typedef struct mxml_fdbuf_s /**** File descriptor buffer (@private) ****/
{
int fd; /* File descriptor */
unsigned char *current, /* Current position in buffer */
*end, /* End of buffer */
buffer[8192]; /* Character buffer */
} mxml_fdbuf_t;
/*
* Global error handler...
*/
extern void (*mxml_error_cb)(const char *);
/*
* Custom data handlers...
*/
static mxml_custom_load_cb_t mxml_custom_load_cb = NULL;
static mxml_custom_save_cb_t mxml_custom_save_cb = NULL;
/*
* Local functions...
*/
static int mxml_add_char(int ch, char **ptr, char **buffer,
int *bufsize);
static int mxml_fd_getc(void *p, int *encoding);
static int mxml_fd_putc(int ch, void *p);
static int mxml_fd_read(mxml_fdbuf_t *buf);
static int mxml_fd_write(mxml_fdbuf_t *buf);
static int mxml_file_getc(void *p, int *encoding);
static int mxml_file_putc(int ch, void *p);
static int mxml_get_entity(mxml_node_t *parent, void *p,
int *encoding,
int (*getc_cb)(void *, int *));
static mxml_node_t *mxml_load_data(mxml_node_t *top, void *p,
mxml_type_t (*cb)(mxml_node_t *),
int (*getc_cb)(void *, int *));
static int mxml_parse_element(mxml_node_t *node, void *p,
int *encoding,
int (*getc_cb)(void *, int *));
static int mxml_string_getc(void *p, int *encoding);
static int mxml_string_putc(int ch, void *p);
static int mxml_write_name(const char *s, void *p,
int (*putc_cb)(int, void *));
static int mxml_write_node(mxml_node_t *node, void *p,
const char *(*cb)(mxml_node_t *, int),
int col,
int (*putc_cb)(int, void *));
static int mxml_write_string(const char *s, void *p,
int (*putc_cb)(int, void *));
static int mxml_write_ws(mxml_node_t *node, void *p,
const char *(*cb)(mxml_node_t *, int), int ws,
int col, int (*putc_cb)(int, void *));
/*
* 'mxmlLoadFd()' - Load a file descriptor into an XML node tree.
*
* The nodes in the specified file are added to the specified top node.
* If no top node is provided, the XML file MUST be well-formed with a
* single parent node like <?xml> for the entire file. The callback
* function returns the value type that should be used for child nodes.
* If MXML_NO_CALLBACK is specified then all child nodes will be either
* MXML_ELEMENT or MXML_TEXT nodes.
*
* The constants MXML_INTEGER_CALLBACK, MXML_OPAQUE_CALLBACK,
* MXML_REAL_CALLBACK, and MXML_TEXT_CALLBACK are defined for loading
* child nodes of the specified type.
*/
mxml_node_t * /* O - First node or NULL if the file could not be read. */
mxmlLoadFd(mxml_node_t *top, /* I - Top node */
int fd, /* I - File descriptor to read from */
mxml_type_t (*cb)(mxml_node_t *node))
/* I - Callback function or MXML_NO_CALLBACK */
{
mxml_fdbuf_t buf; /* File descriptor buffer */
/*
* Initialize the file descriptor buffer...
*/
buf.fd = fd;
buf.current = buf.buffer;
buf.end = buf.buffer;
/*
* Read the XML data...
*/
return (mxml_load_data(top, &buf, cb, mxml_fd_getc));
}
/*
* 'mxmlLoadFile()' - Load a file into an XML node tree.
*
* The nodes in the specified file are added to the specified top node.
* If no top node is provided, the XML file MUST be well-formed with a
* single parent node like <?xml> for the entire file. The callback
* function returns the value type that should be used for child nodes.
* If MXML_NO_CALLBACK is specified then all child nodes will be either
* MXML_ELEMENT or MXML_TEXT nodes.
*
* The constants MXML_INTEGER_CALLBACK, MXML_OPAQUE_CALLBACK,
* MXML_REAL_CALLBACK, and MXML_TEXT_CALLBACK are defined for loading
* child nodes of the specified type.
*/
mxml_node_t * /* O - First node or NULL if the file could not be read. */
mxmlLoadFile(mxml_node_t *top, /* I - Top node */
FILE *fp, /* I - File to read from */
mxml_type_t (*cb)(mxml_node_t *node))
/* I - Callback function or MXML_NO_CALLBACK */
{
/*
* Read the XML data...
*/
return (mxml_load_data(top, fp, cb, mxml_file_getc));
}
/*
* 'mxmlLoadString()' - Load a string into an XML node tree.
*
* The nodes in the specified string are added to the specified top node.
* If no top node is provided, the XML string MUST be well-formed with a
* single parent node like <?xml> for the entire string. The callback
* function returns the value type that should be used for child nodes.
* If MXML_NO_CALLBACK is specified then all child nodes will be either
* MXML_ELEMENT or MXML_TEXT nodes.
*
* The constants MXML_INTEGER_CALLBACK, MXML_OPAQUE_CALLBACK,
* MXML_REAL_CALLBACK, and MXML_TEXT_CALLBACK are defined for loading
* child nodes of the specified type.
*/
mxml_node_t * /* O - First node or NULL if the string has errors. */
mxmlLoadString(mxml_node_t *top, /* I - Top node */
const char *s, /* I - String to load */
mxml_type_t (*cb)(mxml_node_t *node))
/* I - Callback function or MXML_NO_CALLBACK */
{
/*
* Read the XML data...
*/
return (mxml_load_data(top, &s, cb, mxml_string_getc));
}
/*
* 'mxmlSaveAllocString()' - Save an XML node tree to an allocated string.
*
* This function returns a pointer to a string containing the textual
* representation of the XML node tree. The string should be freed
* using the free() function when you are done with it. NULL is returned
* if the node would produce an empty string or if the string cannot be
* allocated.
*
* The callback argument specifies a function that returns a whitespace
* string or NULL before and after each element. If MXML_NO_CALLBACK
* is specified, whitespace will only be added before MXML_TEXT nodes
* with leading whitespace and before attribute names inside opening
* element tags.
*/
char * /* O - Allocated string or NULL */
mxmlSaveAllocString(mxml_node_t *node, /* I - Node to write */
const char *(*cb)(mxml_node_t *node, int ws))
/* I - Whitespace callback or MXML_NO_CALLBACK */
{
int bytes; /* Required bytes */
char buffer[8192]; /* Temporary buffer */
char *s; /* Allocated string */
/*
* Write the node to the temporary buffer...
*/
bytes = mxmlSaveString(node, buffer, sizeof(buffer), cb);
if (bytes <= 0)
return (NULL);
if (bytes < (int)(sizeof(buffer) - 1))
{
/*
* Node fit inside the buffer, so just duplicate that string and
* return...
*/
return (strdup(buffer));
}
/*
* Allocate a buffer of the required size and save the node to the
* new buffer...
*/
if ((s = malloc(bytes + 1)) == NULL)
return (NULL);
mxmlSaveString(node, s, bytes + 1, cb);
/*
* Return the allocated string...
*/
return (s);
}
/*
* 'mxmlSaveFd()' - Save an XML tree to a file descriptor.
*
* The callback argument specifies a function that returns a whitespace
* string or NULL before and after each element. If MXML_NO_CALLBACK
* is specified, whitespace will only be added before MXML_TEXT nodes
* with leading whitespace and before attribute names inside opening
* element tags.
*/
int /* O - 0 on success, -1 on error. */
mxmlSaveFd(mxml_node_t *node, /* I - Node to write */
int fd, /* I - File descriptor to write to */
const char *(*cb)(mxml_node_t *node, int ws))
/* I - Whitespace callback or MXML_NO_CALLBACK */
{
int col; /* Final column */
mxml_fdbuf_t buf; /* File descriptor buffer */
/*
* Initialize the file descriptor buffer...
*/
buf.fd = fd;
buf.current = buf.buffer;
buf.end = buf.buffer + sizeof(buf.buffer) - 4;
/*
* Write the node...
*/
if ((col = mxml_write_node(node, &buf, cb, 0, mxml_fd_putc)) < 0)
return (-1);
if (col > 0)
if (mxml_fd_putc('\n', &buf) < 0)
return (-1);
/*
* Flush and return...
*/
return (mxml_fd_write(&buf));
}
/*
* 'mxmlSaveFile()' - Save an XML tree to a file.
*
* The callback argument specifies a function that returns a whitespace
* string or NULL before and after each element. If MXML_NO_CALLBACK
* is specified, whitespace will only be added before MXML_TEXT nodes
* with leading whitespace and before attribute names inside opening
* element tags.
*/
int /* O - 0 on success, -1 on error. */
mxmlSaveFile(mxml_node_t *node, /* I - Node to write */
FILE *fp, /* I - File to write to */
const char *(*cb)(mxml_node_t *node, int ws))
/* I - Whitespace callback or MXML_NO_CALLBACK */
{
int col; /* Final column */
/*
* Write the node...
*/
if ((col = mxml_write_node(node, fp, cb, 0, mxml_file_putc)) < 0)
return (-1);
if (col > 0)
if (putc('\n', fp) < 0)
return (-1);
/*
* Return 0 (success)...
*/
return (0);
}
/*
* 'mxmlSaveString()' - Save an XML node tree to a string.
*
* This function returns the total number of bytes that would be
* required for the string but only copies (bufsize - 1) characters
* into the specified buffer.
*
* The callback argument specifies a function that returns a whitespace
* string or NULL before and after each element. If MXML_NO_CALLBACK
* is specified, whitespace will only be added before MXML_TEXT nodes
* with leading whitespace and before attribute names inside opening
* element tags.
*/
int /* O - Size of string */
mxmlSaveString(mxml_node_t *node, /* I - Node to write */
char *buffer, /* I - String buffer */
int bufsize, /* I - Size of string buffer */
const char *(*cb)(mxml_node_t *node, int ws))
/* I - Whitespace callback or MXML_NO_CALLBACK */
{
int col; /* Final column */
char *ptr[2]; /* Pointers for putc_cb */
/*
* Write the node...
*/
ptr[0] = buffer;
ptr[1] = buffer + bufsize;
if ((col = mxml_write_node(node, ptr, cb, 0, mxml_string_putc)) < 0)
return (-1);
if (col > 0)
mxml_string_putc('\n', ptr);
/*
* Nul-terminate the buffer...
*/
if (ptr[0] >= ptr[1])
buffer[bufsize - 1] = '\0';
else
ptr[0][0] = '\0';
/*
* Return the number of characters...
*/
return (ptr[0] - buffer);
}
/*
* 'mxmlSetCustomHandlers()' - Set the handling functions for custom data.
*
* The load function accepts a node pointer and a data string and must
* return 0 on success and non-zero on error.
*
* The save function accepts a node pointer and must return a malloc'd
* string on success and NULL on error.
*
*/
void
mxmlSetCustomHandlers(mxml_custom_load_cb_t load,
/* I - Load function */
mxml_custom_save_cb_t save)
/* I - Save function */
{
mxml_custom_load_cb = load;
mxml_custom_save_cb = save;
}
/*
* 'mxmlSetErrorCallback()' - Set the error message callback.
*/
void
mxmlSetErrorCallback(void (*cb)(const char *))
/* I - Error callback function */
{
mxml_error_cb = cb;
}
/*
* 'mxml_add_char()' - Add a character to a buffer, expanding as needed.
*/
static int /* O - 0 on success, -1 on error */
mxml_add_char(int ch, /* I - Character to add */
char **bufptr, /* IO - Current position in buffer */
char **buffer, /* IO - Current buffer */
int *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)
{
free(*buffer);
mxml_error("Unable to expand string buffer to %d bytes!", *bufsize);
return (-1);
}
*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 (0);
}
/*
* 'mxml_fd_getc()' - Read a character from a file descriptor.
*/
static int /* O - Character or EOF */
mxml_fd_getc(void *p, /* I - File descriptor buffer */
int *encoding) /* IO - Encoding */
{
mxml_fdbuf_t *buf; /* File descriptor buffer */
int ch, /* Current character */
temp; /* Temporary character */
/*
* Grab the next character in the buffer...
*/
buf = (mxml_fdbuf_t *)p;
if (buf->current >= buf->end)
if (mxml_fd_read(buf) < 0)
return (EOF);
ch = *(buf->current)++;
switch (*encoding)
{
case ENCODE_UTF8 :
/*
* Got a UTF-8 character; convert UTF-8 to Unicode and return...
*/
if (!(ch & 0x80))
{
#if DEBUG > 1
printf("mxml_fd_getc: %c (0x%04x)\n", ch < ' ' ? '.' : ch, ch);
#endif /* DEBUG > 1 */
if (mxml_bad_char(ch))
{
mxml_error("Bad control character 0x%02x not allowed by XML standard!",
ch);
return (EOF);
}
return (ch);
}
else if (ch == 0xfe)
{
/*
* UTF-16 big-endian BOM?
*/
if (buf->current >= buf->end)
if (mxml_fd_read(buf) < 0)
return (EOF);
ch = *(buf->current)++;
if (ch != 0xff)
return (EOF);
*encoding = ENCODE_UTF16BE;
return (mxml_fd_getc(p, encoding));
}
else if (ch == 0xff)
{
/*
* UTF-16 little-endian BOM?
*/
if (buf->current >= buf->end)
if (mxml_fd_read(buf) < 0)
return (EOF);
ch = *(buf->current)++;
if (ch != 0xfe)
return (EOF);
*encoding = ENCODE_UTF16LE;
return (mxml_fd_getc(p, encoding));
}
else if ((ch & 0xe0) == 0xc0)
{
/*
* Two-byte value...
*/
if (buf->current >= buf->end)
if (mxml_fd_read(buf) < 0)
return (EOF);
temp = *(buf->current)++;
if ((temp & 0xc0) != 0x80)
return (EOF);
ch = ((ch & 0x1f) << 6) | (temp & 0x3f);
if (ch < 0x80)
return (EOF);
}
else if ((ch & 0xf0) == 0xe0)
{
/*
* Three-byte value...
*/
if (buf->current >= buf->end)
if (mxml_fd_read(buf) < 0)
return (EOF);
temp = *(buf->current)++;
if ((temp & 0xc0) != 0x80)
return (EOF);
ch = ((ch & 0x0f) << 6) | (temp & 0x3f);
if (buf->current >= buf->end)
if (mxml_fd_read(buf) < 0)
return (EOF);
temp = *(buf->current)++;
if ((temp & 0xc0) != 0x80)
return (EOF);
ch = (ch << 6) | (temp & 0x3f);
if (ch < 0x800)
return (EOF);
}
else if ((ch & 0xf8) == 0xf0)
{
/*
* Four-byte value...
*/
if (buf->current >= buf->end)
if (mxml_fd_read(buf) < 0)
return (EOF);
temp = *(buf->current)++;
if ((temp & 0xc0) != 0x80)
return (EOF);
ch = ((ch & 0x07) << 6) | (temp & 0x3f);
if (buf->current >= buf->end)
if (mxml_fd_read(buf) < 0)
return (EOF);
temp = *(buf->current)++;
if ((temp & 0xc0) != 0x80)
return (EOF);
ch = (ch << 6) | (temp & 0x3f);
if (buf->current >= buf->end)
if (mxml_fd_read(buf) < 0)
return (EOF);
temp = *(buf->current)++;
if ((temp & 0xc0) != 0x80)
return (EOF);
ch = (ch << 6) | (temp & 0x3f);
if (ch < 0x10000)
return (EOF);
}
else
return (EOF);
break;
case ENCODE_UTF16BE :
/*
* Read UTF-16 big-endian char...
*/
if (buf->current >= buf->end)
if (mxml_fd_read(buf) < 0)
return (EOF);
temp = *(buf->current)++;
ch = (ch << 8) | temp;
if (mxml_bad_char(ch))
{
mxml_error("Bad control character 0x%02x not allowed by XML standard!",
ch);
return (EOF);
}
else if (ch >= 0xd800 && ch <= 0xdbff)
{
/*
* Multi-word UTF-16 char...
*/
int lch;
if (buf->current >= buf->end)
if (mxml_fd_read(buf) < 0)
return (EOF);
lch = *(buf->current)++;
if (buf->current >= buf->end)
if (mxml_fd_read(buf) < 0)
return (EOF);
temp = *(buf->current)++;
lch = (lch << 8) | temp;
if (lch < 0xdc00 || lch >= 0xdfff)
return (EOF);
ch = (((ch & 0x3ff) << 10) | (lch & 0x3ff)) + 0x10000;
}
break;
case ENCODE_UTF16LE :
/*
* Read UTF-16 little-endian char...
*/
if (buf->current >= buf->end)
if (mxml_fd_read(buf) < 0)
return (EOF);
temp = *(buf->current)++;
ch |= (temp << 8);
if (mxml_bad_char(ch))
{
mxml_error("Bad control character 0x%02x not allowed by XML standard!",
ch);
return (EOF);
}
else if (ch >= 0xd800 && ch <= 0xdbff)
{
/*
* Multi-word UTF-16 char...
*/
int lch;
if (buf->current >= buf->end)
if (mxml_fd_read(buf) < 0)
return (EOF);
lch = *(buf->current)++;
if (buf->current >= buf->end)
if (mxml_fd_read(buf) < 0)
return (EOF);
temp = *(buf->current)++;
lch |= (temp << 8);
if (lch < 0xdc00 || lch >= 0xdfff)
return (EOF);
ch = (((ch & 0x3ff) << 10) | (lch & 0x3ff)) + 0x10000;
}
break;
}
#if DEBUG > 1
printf("mxml_fd_getc: %c (0x%04x)\n", ch < ' ' ? '.' : ch, ch);
#endif /* DEBUG > 1 */
return (ch);
}
/*
* 'mxml_fd_putc()' - Write a character to a file descriptor.
*/
static int /* O - 0 on success, -1 on error */
mxml_fd_putc(int ch, /* I - Character */
void *p) /* I - File descriptor buffer */
{
mxml_fdbuf_t *buf; /* File descriptor buffer */
/*
* Flush the write buffer as needed - note above that "end" still leaves
* 4 characters at the end so that we can avoid a lot of extra tests...
*/
buf = (mxml_fdbuf_t *)p;
if (buf->current >= buf->end)
if (mxml_fd_write(buf) < 0)
return (-1);
if (ch < 0x80)
{
/*
* Write ASCII character directly...
*/
*(buf->current)++ = ch;
}
else if (ch < 0x800)
{
/*
* Two-byte UTF-8 character...
*/
*(buf->current)++ = 0xc0 | (ch >> 6);
*(buf->current)++ = 0x80 | (ch & 0x3f);
}
else if (ch < 0x10000)
{
/*
* Three-byte UTF-8 character...
*/
*(buf->current)++ = 0xe0 | (ch >> 12);
*(buf->current)++ = 0x80 | ((ch >> 6) & 0x3f);
*(buf->current)++ = 0x80 | (ch & 0x3f);
}
else
{
/*
* Four-byte UTF-8 character...
*/
*(buf->current)++ = 0xf0 | (ch >> 18);
*(buf->current)++ = 0x80 | ((ch >> 12) & 0x3f);
*(buf->current)++ = 0x80 | ((ch >> 6) & 0x3f);
*(buf->current)++ = 0x80 | (ch & 0x3f);
}
/*
* Return successfully...
*/
return (0);
}
/*
* 'mxml_fd_read()' - Read a buffer of data from a file descriptor.
*/
static int /* O - 0 on success, -1 on error */
mxml_fd_read(mxml_fdbuf_t *buf) /* I - File descriptor buffer */
{
int bytes; /* Bytes read... */
/*
* Range check input...
*/
if (!buf)
return (-1);
/*
* Read from the file descriptor...
*/
while ((bytes = read(buf->fd, buf->buffer, sizeof(buf->buffer))) < 0)
if (errno != EAGAIN && errno != EINTR)
return (-1);
if (bytes == 0)
return (-1);
/*
* Update the pointers and return success...
*/
buf->current = buf->buffer;
buf->end = buf->buffer + bytes;
return (0);
}
/*
* 'mxml_fd_write()' - Write a buffer of data to a file descriptor.
*/
static int /* O - 0 on success, -1 on error */
mxml_fd_write(mxml_fdbuf_t *buf) /* I - File descriptor buffer */
{
int bytes; /* Bytes written */
unsigned char *ptr; /* Pointer into buffer */
/*
* Range check...
*/
if (!buf)
return (-1);
/*
* Return 0 if there is nothing to write...
*/
if (buf->current == buf->buffer)
return (0);
/*
* Loop until we have written everything...
*/
for (ptr = buf->buffer; ptr < buf->current; ptr += bytes)
if ((bytes = write(buf->fd, ptr, buf->current - ptr)) < 0)
return (-1);
/*
* All done, reset pointers and return success...
*/
buf->current = buf->buffer;
return (0);
}
/*
* 'mxml_file_getc()' - Get a character from a file.
*/
static int /* O - Character or EOF */
mxml_file_getc(void *p, /* I - Pointer to file */
int *encoding) /* IO - Encoding */
{
int ch, /* Character from file */
temp; /* Temporary character */
FILE *fp; /* Pointer to file */
/*
* Read a character from the file and see if it is EOF or ASCII...
*/
fp = (FILE *)p;
ch = getc(fp);
if (ch == EOF)
return (EOF);
switch (*encoding)
{
case ENCODE_UTF8 :
/*
* Got a UTF-8 character; convert UTF-8 to Unicode and return...
*/
if (!(ch & 0x80))
{
if (mxml_bad_char(ch))
{
mxml_error("Bad control character 0x%02x not allowed by XML standard!",
ch);
return (EOF);
}
#if DEBUG > 1
printf("mxml_file_getc: %c (0x%04x)\n", ch < ' ' ? '.' : ch, ch);
#endif /* DEBUG > 1 */
return (ch);
}
else if (ch == 0xfe)
{
/*
* UTF-16 big-endian BOM?
*/
ch = getc(fp);
if (ch != 0xff)
return (EOF);
*encoding = ENCODE_UTF16BE;
return (mxml_file_getc(p, encoding));
}
else if (ch == 0xff)
{
/*
* UTF-16 little-endian BOM?
*/
ch = getc(fp);
if (ch != 0xfe)
return (EOF);
*encoding = ENCODE_UTF16LE;
return (mxml_file_getc(p, encoding));
}
else if ((ch & 0xe0) == 0xc0)
{
/*
* Two-byte value...
*/
if ((temp = getc(fp)) == EOF || (temp & 0xc0) != 0x80)
return (EOF);
ch = ((ch & 0x1f) << 6) | (temp & 0x3f);
if (ch < 0x80)
return (EOF);
}
else if ((ch & 0xf0) == 0xe0)
{
/*
* Three-byte value...
*/
if ((temp = getc(fp)) == EOF || (temp & 0xc0) != 0x80)
return (EOF);
ch = ((ch & 0x0f) << 6) | (temp & 0x3f);
if ((temp = getc(fp)) == EOF || (temp & 0xc0) != 0x80)
return (EOF);
ch = (ch << 6) | (temp & 0x3f);
if (ch < 0x800)
return (EOF);
}
else if ((ch & 0xf8) == 0xf0)
{
/*
* Four-byte value...
*/
if ((temp = getc(fp)) == EOF || (temp & 0xc0) != 0x80)
return (EOF);
ch = ((ch & 0x07) << 6) | (temp & 0x3f);
if ((temp = getc(fp)) == EOF || (temp & 0xc0) != 0x80)
return (EOF);
ch = (ch << 6) | (temp & 0x3f);
if ((temp = getc(fp)) == EOF || (temp & 0xc0) != 0x80)
return (EOF);
ch = (ch << 6) | (temp & 0x3f);
if (ch < 0x10000)
return (EOF);
}
else
return (EOF);
break;
case ENCODE_UTF16BE :
/*
* Read UTF-16 big-endian char...
*/
ch = (ch << 8) | getc(fp);
if (mxml_bad_char(ch))
{
mxml_error("Bad control character 0x%02x not allowed by XML standard!",
ch);
return (EOF);
}
else if (ch >= 0xd800 && ch <= 0xdbff)
{
/*
* Multi-word UTF-16 char...
*/
int lch = (getc(fp) << 8) | getc(fp);
if (lch < 0xdc00 || lch >= 0xdfff)
return (EOF);
ch = (((ch & 0x3ff) << 10) | (lch & 0x3ff)) + 0x10000;
}
break;
case ENCODE_UTF16LE :
/*
* Read UTF-16 little-endian char...
*/
ch |= (getc(fp) << 8);
if (mxml_bad_char(ch))
{
mxml_error("Bad control character 0x%02x not allowed by XML standard!",
ch);
return (EOF);
}
else if (ch >= 0xd800 && ch <= 0xdbff)
{
/*
* Multi-word UTF-16 char...
*/
int lch = getc(fp) | (getc(fp) << 8);
if (lch < 0xdc00 || lch >= 0xdfff)
return (EOF);
ch = (((ch & 0x3ff) << 10) | (lch & 0x3ff)) + 0x10000;
}
break;
}
#if DEBUG > 1
printf("mxml_file_getc: %c (0x%04x)\n", ch < ' ' ? '.' : ch, ch);
#endif /* DEBUG > 1 */
return (ch);
}
/*
* 'mxml_file_putc()' - Write a character to a file.
*/
static int /* O - 0 on success, -1 on failure */
mxml_file_putc(int ch, /* I - Character to write */
void *p) /* I - Pointer to file */
{
char buffer[4], /* Buffer for character */
*bufptr; /* Pointer into buffer */
int buflen; /* Number of bytes to write */
if (ch < 0x80)
return (putc(ch, (FILE *)p) == EOF ? -1 : 0);
bufptr = buffer;
if (ch < 0x800)
{
/*
* Two-byte UTF-8 character...
*/
*bufptr++ = 0xc0 | (ch >> 6);
*bufptr++ = 0x80 | (ch & 0x3f);
}
else if (ch < 0x10000)
{
/*
* Three-byte UTF-8 character...
*/
*bufptr++ = 0xe0 | (ch >> 12);
*bufptr++ = 0x80 | ((ch >> 6) & 0x3f);
*bufptr++ = 0x80 | (ch & 0x3f);
}
else
{
/*
* Four-byte UTF-8 character...
*/
*bufptr++ = 0xf0 | (ch >> 18);
*bufptr++ = 0x80 | ((ch >> 12) & 0x3f);
*bufptr++ = 0x80 | ((ch >> 6) & 0x3f);
*bufptr++ = 0x80 | (ch & 0x3f);
}
buflen = bufptr - buffer;
return (fwrite(buffer, 1, buflen, (FILE *)p) < buflen ? -1 : 0);
}
/*
* 'mxml_get_entity()' - Get the character corresponding to an entity...
*/
static int /* O - Character value or EOF on error */
mxml_get_entity(mxml_node_t *parent, /* I - Parent node */
void *p, /* I - Pointer to source */
int *encoding, /* IO - Character encoding */
int (*getc_cb)(void *, int *))
/* I - Get character function */
{
int ch; /* Current character */
char entity[64], /* Entity string */
*entptr; /* Pointer into entity */
entptr = entity;
while ((ch = (*getc_cb)(p, encoding)) != EOF)
if (ch > 126 || (!isalnum(ch) && ch != '#'))
break;
else if (entptr < (entity + sizeof(entity) - 1))
*entptr++ = ch;
else
{
mxml_error("Entity name too long under parent <%s>!",
parent ? parent->value.element.name : "null");
break;
}
*entptr = '\0';
if (ch != ';')
{
mxml_error("Character entity \"%s\" not terminated under parent <%s>!",
entity, parent ? parent->value.element.name : "null");
return (EOF);
}
if (entity[0] == '#')
{
if (entity[1] == 'x')
ch = strtol(entity + 2, NULL, 16);
else
ch = strtol(entity + 1, NULL, 10);
}
else if ((ch = mxmlEntityGetValue(entity)) < 0)
mxml_error("Entity name \"%s;\" not supported under parent <%s>!",
entity, parent ? parent->value.element.name : "null");
if (mxml_bad_char(ch))
{
mxml_error("Bad control character 0x%02x under parent <%s> not allowed by XML standard!",
ch, parent ? parent->value.element.name : "null");
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 file could not be read. */
mxml_load_data(mxml_node_t *top, /* I - Top node */
void *p, /* I - Pointer to data */
mxml_type_t (*cb)(mxml_node_t *),
/* I - Callback function or MXML_NO_CALLBACK */
int (*getc_cb)(void *, int *))
/* I - Read function */
{
mxml_node_t *node, /* Current node */
*first, /* First node added */
*parent; /* Current parent node */
int ch, /* Character from file */
whitespace; /* Non-zero if whitespace seen */
char *buffer, /* String buffer */
*bufptr; /* Pointer into buffer */
int bufsize; /* Size of buffer */
mxml_type_t type; /* Current node type */
int encoding; /* Character encoding */
static const char * const types[] = /* Type strings... */
{
"MXML_ELEMENT", /* XML element with attributes */
"MXML_INTEGER", /* Integer value */
"MXML_OPAQUE", /* Opaque string */
"MXML_REAL", /* Real value */
"MXML_TEXT", /* Text fragment */
"MXML_CUSTOM" /* Custom data */
};
/*
* Read elements and other nodes from the file...
*/
if ((buffer = malloc(64)) == NULL)
{
mxml_error("Unable to allocate string buffer!");
return (NULL);
}
bufsize = 64;
bufptr = buffer;
parent = top;
first = NULL;
whitespace = 0;
encoding = ENCODE_UTF8;
if (cb && parent)
type = (*cb)(parent);
else
type = MXML_TEXT;
while ((ch = (*getc_cb)(p, &encoding)) != EOF)
{
if ((ch == '<' ||
(isspace(ch) && type != MXML_OPAQUE && type != MXML_CUSTOM)) &&
bufptr > buffer)
{
/*
* Add a new value node...
*/
*bufptr = '\0';
switch (type)
{
case MXML_INTEGER :
node = mxmlNewInteger(parent, strtol(buffer, &bufptr, 0));
break;
case MXML_OPAQUE :
node = mxmlNewOpaque(parent, buffer);
break;
case MXML_REAL :
node = mxmlNewReal(parent, strtod(buffer, &bufptr));
break;
case MXML_TEXT :
node = mxmlNewText(parent, whitespace, buffer);
break;
case MXML_CUSTOM :
if (mxml_custom_load_cb)
{
/*
* Use the callback to fill in the custom data...
*/
node = mxmlNewCustom(parent, NULL, NULL);
if ((*mxml_custom_load_cb)(node, buffer))
{
mxml_error("Bad custom value '%s' in parent <%s>!",
buffer, parent ? parent->value.element.name : "null");
mxmlDelete(node);
node = NULL;
}
break;
}
default : /* Should never happen... */
node = NULL;
break;
}
if (*bufptr)
{
/*
* Bad integer/real number value...
*/
mxml_error("Bad %s value '%s' in parent <%s>!",
type == MXML_INTEGER ? "integer" : "real", buffer,
parent ? parent->value.element.name : "null");
break;
}
bufptr = buffer;
whitespace = isspace(ch) && type == MXML_TEXT;
if (!node)
{
/*
* Print error and return...
*/
mxml_error("Unable to add value node of type %s to parent <%s>!",
types[type], parent ? parent->value.element.name : "null");
goto error;
}
if (!first)
first = node;
}
else if (isspace(ch) && type == MXML_TEXT)
whitespace = 1;
/*
* Add lone whitespace node if we have an element and existing
* whitespace...
*/
if (ch == '<' && whitespace && type == MXML_TEXT)
{
mxmlNewText(parent, whitespace, "");
whitespace = 0;
}
if (ch == '<')
{
/*
* Start of open/close tag...
*/
bufptr = buffer;
while ((ch = (*getc_cb)(p, &encoding)) != EOF)
if (isspace(ch) || ch == '>' || (ch == '/' && bufptr > buffer))
break;
else if (ch == '&')
{
if ((ch = mxml_get_entity(parent, p, &encoding, getc_cb)) == EOF)
goto error;
if (mxml_add_char(ch, &bufptr, &buffer, &bufsize))
goto error;
}
else if (mxml_add_char(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;
*bufptr = '\0';
if (!strcmp(buffer, "!--"))
{
/*
* Gather rest of comment...
*/
while ((ch = (*getc_cb)(p, &encoding)) != EOF)
{
if (ch == '>' && bufptr > (buffer + 4) &&
bufptr[-3] != '-' && bufptr[-2] == '-' && bufptr[-1] == '-')
break;
else if (mxml_add_char(ch, &bufptr, &buffer, &bufsize))
goto error;
}
/*
* Error out if we didn't get the whole comment...
*/
if (ch != '>')
{
/*
* Print error and return...
*/
mxml_error("Early EOF in comment node!");
goto error;
}
/*
* Otherwise add this as an element under the current parent...
*/
*bufptr = '\0';
if (!mxmlNewElement(parent, buffer))
{
/*
* Just print error for now...
*/
mxml_error("Unable to add comment node to parent <%s>!",
parent ? parent->value.element.name : "null");
break;
}
}
else if (!strcmp(buffer, "![CDATA["))
{
/*
* Gather CDATA section...
*/
while ((ch = (*getc_cb)(p, &encoding)) != EOF)
{
if (ch == '>' && !strncmp(bufptr - 2, "]]", 2))
break;
else if (mxml_add_char(ch, &bufptr, &buffer, &bufsize))
goto error;
}
/*
* Error out if we didn't get the whole comment...
*/
if (ch != '>')
{
/*
* Print error and return...
*/
mxml_error("Early EOF in CDATA node!");
goto error;
}
/*
* Otherwise add this as an element under the current parent...
*/
*bufptr = '\0';
if (!mxmlNewElement(parent, buffer))
{
/*
* Print error and return...
*/
mxml_error("Unable to add CDATA node to parent <%s>!",
parent ? parent->value.element.name : "null");
goto error;
}
}
else if (buffer[0] == '?')
{
/*
* Gather rest of processing instruction...
*/
while ((ch = (*getc_cb)(p, &encoding)) != EOF)
{
if (ch == '>' && bufptr > buffer && bufptr[-1] == '?')
break;
else if (mxml_add_char(ch, &bufptr, &buffer, &bufsize))
goto error;
}
/*
* Error out if we didn't get the whole processing instruction...
*/
if (ch != '>')
{
/*
* Print error and return...
*/
mxml_error("Early EOF in processing instruction node!");
goto error;
}
/*
* Otherwise add this as an element under the current parent...
*/
*bufptr = '\0';
if (!(parent = mxmlNewElement(parent, buffer)))
{
/*
* Print error and return...
*/
mxml_error("Unable to add processing instruction node to parent <%s>!",
parent ? parent->value.element.name : "null");
goto error;
}
if (cb)
type = (*cb)(parent);
}
else if (buffer[0] == '!')
{
/*
* Gather rest of declaration...
*/
do
{
if (ch == '>')
break;
else
{
if (ch == '&')
if ((ch = mxml_get_entity(parent, p, &encoding, getc_cb)) == EOF)
goto error;
if (mxml_add_char(ch, &bufptr, &buffer, &bufsize))
goto error;
}
}
while ((ch = (*getc_cb)(p, &encoding)) != EOF);
/*
* Error out if we didn't get the whole declaration...
*/
if (ch != '>')
{
/*
* Print error and return...
*/
mxml_error("Early EOF in declaration node!");
goto error;
}
/*
* Otherwise add this as an element under the current parent...
*/
*bufptr = '\0';
node = mxmlNewElement(parent, buffer);
if (!node)
{
/*
* Print error and return...
*/
mxml_error("Unable to add declaration node to parent <%s>!",
parent ? parent->value.element.name : "null");
goto error;
}
/*
* Descend into this node, setting the value type as needed...
*/
parent = node;
if (cb)
type = (*cb)(parent);
}
else if (buffer[0] == '/')
{
/*
* Handle close tag...
*/
if (!parent || strcmp(buffer + 1, parent->value.element.name))
{
/*
* Close tag doesn't match tree; print an error for now...
*/
mxml_error("Mismatched close tag <%s> under parent <%s>!",
buffer, parent->value.element.name);
goto error;
}
/*
* Keep reading until we see >...
*/
while (ch != '>' && ch != EOF)
ch = (*getc_cb)(p, &encoding);
/*
* Ascend into the parent and set the value type as needed...
*/
parent = parent->parent;
if (cb && parent)
type = (*cb)(parent);
}
else
{
/*
* Handle open tag...
*/
node = mxmlNewElement(parent, buffer);
if (!node)
{
/*
* Just print error for now...
*/
mxml_error("Unable to add element node to parent <%s>!",
parent ? parent->value.element.name : "null");
goto error;
}
if (isspace(ch))
ch = mxml_parse_element(node, p, &encoding, getc_cb);
else if (ch == '/')
{
if ((ch = (*getc_cb)(p, &encoding)) != '>')
{
mxml_error("Expected > but got '%c' instead for element <%s/>!",
ch, buffer);
goto error;
}
ch = '/';
}
if (ch == EOF)
break;
if (ch != '/')
{
/*
* Descend into this node, setting the value type as needed...
*/
parent = node;
if (cb && parent)
type = (*cb)(parent);
}
}
bufptr = buffer;
}
else if (ch == '&')
{
/*
* Add character entity to current buffer...
*/
if ((ch = mxml_get_entity(parent, p, &encoding, getc_cb)) == EOF)
goto error;
if (mxml_add_char(ch, &bufptr, &buffer, &bufsize))
goto error;
}
else if (type == MXML_OPAQUE || type == MXML_CUSTOM || !isspace(ch))
{
/*
* Add character to current buffer...
*/
if (mxml_add_char(ch, &bufptr, &buffer, &bufsize))
goto error;
}
}
/*
* Free the string buffer - we don't need it anymore...
*/
free(buffer);
/*
* Find the top element and return it...
*/
if (parent)
{
while (parent->parent != top && parent->parent)
parent = parent->parent;
}
return (parent);
/*
* 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_node_t *node, /* I - Element node */
void *p, /* I - Data to read from */
int *encoding,
/* IO - Encoding */
int (*getc_cb)(void *, int *))
/* I - Data callback */
{
int ch, /* Current character in file */
quote; /* Quoting character */
char *name, /* Attribute name */
*value, /* Attribute value */
*ptr; /* Pointer into name/value */
int namesize, /* Size of name string */
valsize; /* Size of value string */
/*
* Initialize the name and value buffers...
*/
if ((name = malloc(64)) == NULL)
{
mxml_error("Unable to allocate memory for name!");
return (EOF);
}
namesize = 64;
if ((value = malloc(64)) == NULL)
{
free(name);
mxml_error("Unable to allocate memory for value!");
return (EOF);
}
valsize = 64;
/*
* Loop until we hit a >, /, ?, or EOF...
*/
while ((ch = (*getc_cb)(p, encoding)) != EOF)
{
#if DEBUG > 1
fprintf(stderr, "parse_element: ch='%c'\n", ch);
#endif /* DEBUG > 1 */
/*
* Skip leading whitespace...
*/
if (isspace(ch))
continue;
/*
* Stop at /, ?, or >...
*/
if (ch == '/' || ch == '?')
{
/*
* Grab the > character and print an error if it isn't there...
*/
quote = (*getc_cb)(p, encoding);
if (quote != '>')
{
mxml_error("Expected '>' after '%c' for element %s, but got '%c'!",
ch, node->value.element.name, quote);
ch = EOF;
}
break;
}
else if (ch == '>')
break;
/*
* Read the attribute name...
*/
name[0] = ch;
ptr = name + 1;
if (ch == '\"' || ch == '\'')
{
/*
* Name is in quotes, so get a quoted string...
*/
quote = ch;
while ((ch = (*getc_cb)(p, encoding)) != EOF)
{
if (ch == '&')
if ((ch = mxml_get_entity(node, p, encoding, getc_cb)) == EOF)
goto error;
if (mxml_add_char(ch, &ptr, &name, &namesize))
goto error;
if (ch == quote)
break;
}
}
else
{
/*
* Grab an normal, non-quoted name...
*/
while ((ch = (*getc_cb)(p, encoding)) != EOF)
if (isspace(ch) || ch == '=' || ch == '/' || ch == '>' || ch == '?')
break;
else
{
if (ch == '&')
if ((ch = mxml_get_entity(node, p, encoding, getc_cb)) == EOF)
goto error;
if (mxml_add_char(ch, &ptr, &name, &namesize))
goto error;
}
}
*ptr = '\0';
if (mxmlElementGetAttr(node, name))
goto error;
if (ch == '=')
{
/*
* Read the attribute value...
*/
if ((ch = (*getc_cb)(p, encoding)) == EOF)
{
mxml_error("Missing value for attribute '%s' in element %s!",
name, node->value.element.name);
return (EOF);
}
if (ch == '\'' || ch == '\"')
{
/*
* Read quoted value...
*/
quote = ch;
ptr = value;
while ((ch = (*getc_cb)(p, encoding)) != EOF)
if (ch == quote)
break;
else
{
if (ch == '&')
if ((ch = mxml_get_entity(node, p, encoding, getc_cb)) == EOF)
goto error;
if (mxml_add_char(ch, &ptr, &value, &valsize))
goto error;
}
*ptr = '\0';
}
else
{
/*
* Read unquoted value...
*/
value[0] = ch;
ptr = value + 1;
while ((ch = (*getc_cb)(p, encoding)) != EOF)
if (isspace(ch) || ch == '=' || ch == '/' || ch == '>')
break;
else
{
if (ch == '&')
if ((ch = mxml_get_entity(node, p, encoding, getc_cb)) == EOF)
goto error;
if (mxml_add_char(ch, &ptr, &value, &valsize))
goto error;
}
*ptr = '\0';
}
/*
* Set the attribute with the given string value...
*/
mxmlElementSetAttr(node, name, value);
}
else
{
/*
* Set the attribute with a NULL value...
*/
mxmlElementSetAttr(node, name, NULL);
}
/*
* Check the end character...
*/
if (ch == '/' || ch == '?')
{
/*
* Grab the > character and print an error if it isn't there...
*/
quote = (*getc_cb)(p, encoding);
if (quote != '>')
{
mxml_error("Expected '>' after '%c' for element %s, but got '%c'!",
ch, node->value.element.name, quote);
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_string_getc()' - Get a character from a string.
*/
static int /* O - Character or EOF */
mxml_string_getc(void *p, /* I - Pointer to file */
int *encoding) /* IO - Encoding */
{
int ch; /* Character */
const char **s; /* Pointer to string pointer */
s = (const char **)p;
if ((ch = (*s)[0] & 255) != 0 || *encoding == ENCODE_UTF16LE)
{
/*
* Got character; convert UTF-8 to integer and return...
*/
(*s)++;
switch (*encoding)
{
case ENCODE_UTF8 :
if (!(ch & 0x80))
{
#if DEBUG > 1
printf("mxml_string_getc: %c (0x%04x)\n", ch < ' ' ? '.' : ch, ch);
#endif /* DEBUG > 1 */
if (mxml_bad_char(ch))
{
mxml_error("Bad control character 0x%02x not allowed by XML standard!",
ch);
return (EOF);
}
return (ch);
}
else if (ch == 0xfe)
{
/*
* UTF-16 big-endian BOM?
*/
if (((*s)[0] & 255) != 0xff)
return (EOF);
*encoding = ENCODE_UTF16BE;
(*s)++;
return (mxml_string_getc(p, encoding));
}
else if (ch == 0xff)
{
/*
* UTF-16 little-endian BOM?
*/
if (((*s)[0] & 255) != 0xfe)
return (EOF);
*encoding = ENCODE_UTF16LE;
(*s)++;
return (mxml_string_getc(p, encoding));
}
else if ((ch & 0xe0) == 0xc0)
{
/*
* Two-byte value...
*/
if (((*s)[0] & 0xc0) != 0x80)
return (EOF);
ch = ((ch & 0x1f) << 6) | ((*s)[0] & 0x3f);
(*s)++;
if (ch < 0x80)
return (EOF);
#if DEBUG > 1
printf("mxml_string_getc: %c (0x%04x)\n", ch < ' ' ? '.' : ch, ch);
#endif /* DEBUG > 1 */
return (ch);
}
else if ((ch & 0xf0) == 0xe0)
{
/*
* Three-byte value...
*/
if (((*s)[0] & 0xc0) != 0x80 ||
((*s)[1] & 0xc0) != 0x80)
return (EOF);
ch = ((((ch & 0x0f) << 6) | ((*s)[0] & 0x3f)) << 6) | ((*s)[1] & 0x3f);
(*s) += 2;
if (ch < 0x800)
return (EOF);
#if DEBUG > 1
printf("mxml_string_getc: %c (0x%04x)\n", ch < ' ' ? '.' : ch, ch);
#endif /* DEBUG > 1 */
return (ch);
}
else if ((ch & 0xf8) == 0xf0)
{
/*
* Four-byte value...
*/
if (((*s)[0] & 0xc0) != 0x80 ||
((*s)[1] & 0xc0) != 0x80 ||
((*s)[2] & 0xc0) != 0x80)
return (EOF);
ch = ((((((ch & 0x07) << 6) | ((*s)[0] & 0x3f)) << 6) |
((*s)[1] & 0x3f)) << 6) | ((*s)[2] & 0x3f);
(*s) += 3;
if (ch < 0x10000)
return (EOF);
#if DEBUG > 1
printf("mxml_string_getc: %c (0x%04x)\n", ch < ' ' ? '.' : ch, ch);
#endif /* DEBUG > 1 */
return (ch);
}
else
return (EOF);
case ENCODE_UTF16BE :
/*
* Read UTF-16 big-endian char...
*/
ch = (ch << 8) | ((*s)[0] & 255);
(*s) ++;
if (mxml_bad_char(ch))
{
mxml_error("Bad control character 0x%02x not allowed by XML standard!",
ch);
return (EOF);
}
else if (ch >= 0xd800 && ch <= 0xdbff)
{
/*
* Multi-word UTF-16 char...
*/
int lch; /* Lower word */
if (!(*s)[0])
return (EOF);
lch = (((*s)[0] & 255) << 8) | ((*s)[1] & 255);
(*s) += 2;
if (lch < 0xdc00 || lch >= 0xdfff)
return (EOF);
ch = (((ch & 0x3ff) << 10) | (lch & 0x3ff)) + 0x10000;
}
#if DEBUG > 1
printf("mxml_string_getc: %c (0x%04x)\n", ch < ' ' ? '.' : ch, ch);
#endif /* DEBUG > 1 */
return (ch);
case ENCODE_UTF16LE :
/*
* Read UTF-16 little-endian char...
*/
ch = ch | (((*s)[0] & 255) << 8);
if (!ch)
{
(*s) --;
return (EOF);
}
(*s) ++;
if (mxml_bad_char(ch))
{
mxml_error("Bad control character 0x%02x not allowed by XML standard!",
ch);
return (EOF);
}
else if (ch >= 0xd800 && ch <= 0xdbff)
{
/*
* Multi-word UTF-16 char...
*/
int lch; /* Lower word */
if (!(*s)[1])
return (EOF);
lch = (((*s)[1] & 255) << 8) | ((*s)[0] & 255);
(*s) += 2;
if (lch < 0xdc00 || lch >= 0xdfff)
return (EOF);
ch = (((ch & 0x3ff) << 10) | (lch & 0x3ff)) + 0x10000;
}
#if DEBUG > 1
printf("mxml_string_getc: %c (0x%04x)\n", ch < ' ' ? '.' : ch, ch);
#endif /* DEBUG > 1 */
return (ch);
}
}
return (EOF);
}
/*
* 'mxml_string_putc()' - Write a character to a string.
*/
static int /* O - 0 on success, -1 on failure */
mxml_string_putc(int ch, /* I - Character to write */
void *p) /* I - Pointer to string pointers */
{
char **pp; /* Pointer to string pointers */
pp = (char **)p;
if (ch < 0x80)
{
/*
* Plain ASCII doesn't need special encoding...
*/
if (pp[0] < pp[1])
pp[0][0] = ch;
pp[0] ++;
}
else if (ch < 0x800)
{
/*
* Two-byte UTF-8 character...
*/
if ((pp[0] + 1) < pp[1])
{
pp[0][0] = 0xc0 | (ch >> 6);
pp[0][1] = 0x80 | (ch & 0x3f);
}
pp[0] += 2;
}
else if (ch < 0x10000)
{
/*
* Three-byte UTF-8 character...
*/
if ((pp[0] + 2) < pp[1])
{
pp[0][0] = 0xe0 | (ch >> 12);
pp[0][1] = 0x80 | ((ch >> 6) & 0x3f);
pp[0][2] = 0x80 | (ch & 0x3f);
}
pp[0] += 3;
}
else
{
/*
* Four-byte UTF-8 character...
*/
if ((pp[0] + 2) < pp[1])
{
pp[0][0] = 0xf0 | (ch >> 18);
pp[0][1] = 0x80 | ((ch >> 12) & 0x3f);
pp[0][2] = 0x80 | ((ch >> 6) & 0x3f);
pp[0][3] = 0x80 | (ch & 0x3f);
}
pp[0] += 4;
}
return (0);
}
/*
* 'mxml_write_name()' - Write a name string.
*/
static int /* O - 0 on success, -1 on failure */
mxml_write_name(const char *s, /* I - Name to write */
void *p, /* I - Write pointer */
int (*putc_cb)(int, void *))
/* I - Write callback */
{
char quote; /* Quote character */
const char *name; /* Entity name */
if (*s == '\"' || *s == '\'')
{
/*
* Write a quoted name string...
*/
if ((*putc_cb)(*s, p) < 0)
return (-1);
quote = *s++;
while (*s && *s != quote)
{
if ((name = mxmlEntityGetName(*s)) != NULL)
{
if ((*putc_cb)('&', p) < 0)
return (-1);
while (*name)
{
if ((*putc_cb)(*name, p) < 0)
return (-1);
name ++;
}
if ((*putc_cb)(';', p) < 0)
return (-1);
}
else if ((*putc_cb)(*s, p) < 0)
return (-1);
s ++;
}
/*
* Write the end quote...
*/
if ((*putc_cb)(quote, p) < 0)
return (-1);
}
else
{
/*
* Write a non-quoted name string...
*/
while (*s)
{
if ((*putc_cb)(*s, p) < 0)
return (-1);
s ++;
}
}
return (0);
}
/*
* '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 */
void *p, /* I - File to write to */
const char *(*cb)(mxml_node_t *, int),
/* I - Whitespace callback */
int col, /* I - Current column */
int (*putc_cb)(int, void *))
{
int i, /* Looping var */
width; /* Width of attr + value */
mxml_attr_t *attr; /* Current attribute */
char s[255]; /* Temporary string */
while (node != NULL)
{
/*
* Print the node value...
*/
switch (node->type)
{
case MXML_ELEMENT :
col = mxml_write_ws(node, p, cb, MXML_WS_BEFORE_OPEN, col, putc_cb);
if ((*putc_cb)('<', p) < 0)
return (-1);
if (node->value.element.name[0] == '?' ||
!strncmp(node->value.element.name, "!--", 3) ||
!strncmp(node->value.element.name, "![CDATA[", 8))
{
/*
* Comments, CDATA, and processing instructions do not
* use character entities.
*/
const char *ptr; /* Pointer into name */
for (ptr = node->value.element.name; *ptr; ptr ++)
if ((*putc_cb)(*ptr, p) < 0)
return (-1);
/*
* Prefer a newline for whitespace after ?xml...
*/
if (!strncmp(node->value.element.name, "?xml", 4))
col = MXML_WRAP;
}
else if (mxml_write_name(node->value.element.name, p, putc_cb) < 0)
return (-1);
col += strlen(node->value.element.name) + 1;
for (i = node->value.element.num_attrs, attr = node->value.element.attrs;
i > 0;
i --, attr ++)
{
width = strlen(attr->name);
if (attr->value)
width += strlen(attr->value) + 3;
if ((col + width) > MXML_WRAP)
{
if ((*putc_cb)('\n', p) < 0)
return (-1);
col = 0;
}
else
{
if ((*putc_cb)(' ', p) < 0)
return (-1);
col ++;
}
if (mxml_write_name(attr->name, p, putc_cb) < 0)
return (-1);
if (attr->value)
{
if ((*putc_cb)('=', p) < 0)
return (-1);
if ((*putc_cb)('\"', p) < 0)
return (-1);
if (mxml_write_string(attr->value, p, putc_cb) < 0)
return (-1);
if ((*putc_cb)('\"', p) < 0)
return (-1);
}
col += width;
}
if (node->child)
{
/*
* Write children...
*/
if ((*putc_cb)('>', p) < 0)
return (-1);
else
col ++;
col = mxml_write_ws(node, p, cb, MXML_WS_AFTER_OPEN, col, putc_cb);
if ((col = mxml_write_node(node->child, p, cb, col, putc_cb)) < 0)
return (-1);
/*
* The ? and ! elements are special-cases and have no end tags...
*/
if (node->value.element.name[0] != '!' &&
node->value.element.name[0] != '?')
{
col = mxml_write_ws(node, p, cb, MXML_WS_BEFORE_CLOSE, col, putc_cb);
if ((*putc_cb)('<', p) < 0)
return (-1);
if ((*putc_cb)('/', p) < 0)
return (-1);
if (mxml_write_string(node->value.element.name, p, putc_cb) < 0)
return (-1);
if ((*putc_cb)('>', p) < 0)
return (-1);
col += strlen(node->value.element.name) + 3;
col = mxml_write_ws(node, p, cb, MXML_WS_AFTER_CLOSE, col, putc_cb);
}
}
else if (node->value.element.name[0] == '!' ||
node->value.element.name[0] == '?')
{
/*
* The ? and ! elements are special-cases...
*/
if ((*putc_cb)('>', p) < 0)
return (-1);
else
col ++;
col = mxml_write_ws(node, p, cb, MXML_WS_AFTER_OPEN, col, putc_cb);
}
else
{
if ((*putc_cb)(' ', p) < 0)
return (-1);
if ((*putc_cb)('/', p) < 0)
return (-1);
if ((*putc_cb)('>', p) < 0)
return (-1);
col += 3;
col = mxml_write_ws(node, p, cb, MXML_WS_AFTER_OPEN, col, putc_cb);
}
break;
case MXML_INTEGER :
if (node->prev)
{
if (col > MXML_WRAP)
{
if ((*putc_cb)('\n', p) < 0)
return (-1);
col = 0;
}
else if ((*putc_cb)(' ', p) < 0)
return (-1);
else
col ++;
}
sprintf(s, "%d", node->value.integer);
if (mxml_write_string(s, p, putc_cb) < 0)
return (-1);
col += strlen(s);
break;
case MXML_OPAQUE :
if (mxml_write_string(node->value.opaque, p, putc_cb) < 0)
return (-1);
col += strlen(node->value.opaque);
break;
case MXML_REAL :
if (node->prev)
{
if (col > MXML_WRAP)
{
if ((*putc_cb)('\n', p) < 0)
return (-1);
col = 0;
}
else if ((*putc_cb)(' ', p) < 0)
return (-1);
else
col ++;
}
sprintf(s, "%f", node->value.real);
if (mxml_write_string(s, p, putc_cb) < 0)
return (-1);
col += strlen(s);
break;
case MXML_TEXT :
if (node->value.text.whitespace && col > 0)
{
if (col > MXML_WRAP)
{
if ((*putc_cb)('\n', p) < 0)
return (-1);
col = 0;
}
else if ((*putc_cb)(' ', p) < 0)
return (-1);
else
col ++;
}
if (mxml_write_string(node->value.text.string, p, putc_cb) < 0)
return (-1);
col += strlen(node->value.text.string);
break;
case MXML_CUSTOM :
if (mxml_custom_save_cb)
{
char *data; /* Custom data string */
const char *newline; /* Last newline in string */
if ((data = (*mxml_custom_save_cb)(node)) == NULL)
return (-1);
if (mxml_write_string(data, p, putc_cb) < 0)
return (-1);
if ((newline = strrchr(data, '\n')) == NULL)
col += strlen(data);
else
col = strlen(newline);
free(data);
break;
}
default : /* Should never happen */
return (-1);
}
/*
* Next node...
*/
node = node->next;
}
return (col);
}
/*
* 'mxml_write_string()' - Write a string, escaping & and < as needed.
*/
static int /* O - 0 on success, -1 on failure */
mxml_write_string(const char *s, /* I - String to write */
void *p, /* I - Write pointer */
int (*putc_cb)(int, void *))
/* I - Write callback */
{
const char *name; /* Entity name, if any */
while (*s)
{
if ((name = mxmlEntityGetName(*s)) != NULL)
{
if ((*putc_cb)('&', p) < 0)
return (-1);
while (*name)
{
if ((*putc_cb)(*name, p) < 0)
return (-1);
name ++;
}
if ((*putc_cb)(';', p) < 0)
return (-1);
}
else if ((*putc_cb)(*s, p) < 0)
return (-1);
s ++;
}
return (0);
}
/*
* 'mxml_write_ws()' - Do whitespace callback...
*/
static int /* O - New column */
mxml_write_ws(mxml_node_t *node, /* I - Current node */
void *p, /* I - Write pointer */
const char *(*cb)(mxml_node_t *, int),
/* I - Callback function */
int ws, /* I - Where value */
int col, /* I - Current column */
int (*putc_cb)(int, void *))
/* I - Write callback */
{
const char *s; /* Whitespace string */
if (cb && (s = (*cb)(node, ws)) != NULL)
{
while (*s)
{
if ((*putc_cb)(*s, p) < 0)
return (-1);
else if (*s == '\n')
col = 0;
else if (*s == '\t')
{
col += MXML_TAB;
col = col - (col % MXML_TAB);
}
else
col ++;
s ++;
}
}
return (col);
}
/*
* End of "$Id$".
*/
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