diff options
author | kpfleming <kpfleming@f38db490-d61c-443f-a65b-d21fe96a405b> | 2006-04-24 17:11:45 +0000 |
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committer | kpfleming <kpfleming@f38db490-d61c-443f-a65b-d21fe96a405b> | 2006-04-24 17:11:45 +0000 |
commit | 29f496ef12247a2401d02428fa533020b588f5b6 (patch) | |
tree | 170532911902642fdae405ec644509398b0b6ee5 /mxml/mxml-string.c | |
parent | 3cbcc049473cb374710364337d0d415c56133b0e (diff) |
Thanks to the fine work of Russell Bryant and Dancho Lazarov, we now have autoconf and menuselect tools for Asterisk!
git-svn-id: http://svn.digium.com/svn/asterisk/trunk@22267 f38db490-d61c-443f-a65b-d21fe96a405b
Diffstat (limited to 'mxml/mxml-string.c')
-rw-r--r-- | mxml/mxml-string.c | 377 |
1 files changed, 377 insertions, 0 deletions
diff --git a/mxml/mxml-string.c b/mxml/mxml-string.c new file mode 100644 index 000000000..9c2f9b20b --- /dev/null +++ b/mxml/mxml-string.c @@ -0,0 +1,377 @@ +/* + * "$Id$" + * + * String functions 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: + * + * mxml_strdup() - Duplicate a string. + * mxml_strdupf() - Format and duplicate a string. + * mxml_vsnprintf() - Format a string into a fixed size buffer. + */ + +/* + * Include necessary headers... + */ + +#include "config.h" + + +/* + * 'mxml_strdup()' - Duplicate a string. + */ + +#ifndef HAVE_STRDUP +char * /* O - New string pointer */ +mxml_strdup(const char *s) /* I - String to duplicate */ +{ + char *t; /* New string pointer */ + + + if (s == NULL) + return (NULL); + + if ((t = malloc(strlen(s) + 1)) == NULL) + return (NULL); + + return (strcpy(t, s)); +} +#endif /* !HAVE_STRDUP */ + + +/* + * 'mxml_strdupf()' - Format and duplicate a string. + */ + +char * /* O - New string pointer */ +mxml_strdupf(const char *format, /* I - Printf-style format string */ + va_list ap) /* I - Pointer to additional arguments */ +{ + int bytes; /* Number of bytes required */ + char *buffer, /* String buffer */ + temp[256]; /* Small buffer for first vsnprintf */ + + + /* + * First format with a tiny buffer; this will tell us how many bytes are + * needed... + */ + + bytes = vsnprintf(temp, sizeof(temp), format, ap); + + if (bytes < sizeof(temp)) + { + /* + * Hey, the formatted string fits in the tiny buffer, so just dup that... + */ + + return (strdup(temp)); + } + + /* + * Allocate memory for the whole thing and reformat to the new, larger + * buffer... + */ + + if ((buffer = calloc(1, bytes + 1)) != NULL) + vsnprintf(buffer, bytes + 1, format, ap); + + /* + * Return the new string... + */ + + return (buffer); +} + + +#ifndef HAVE_VSNPRINTF +/* + * 'mxml_vsnprintf()' - Format a string into a fixed size buffer. + */ + +int /* O - Number of bytes formatted */ +mxml_vsnprintf(char *buffer, /* O - Output buffer */ + size_t bufsize, /* O - Size of output buffer */ + const char *format, /* I - Printf-style format string */ + va_list ap) /* I - Pointer to additional arguments */ +{ + char *bufptr, /* Pointer to position in buffer */ + *bufend, /* Pointer to end of buffer */ + sign, /* Sign of format width */ + size, /* Size character (h, l, L) */ + type; /* Format type character */ + const char *bufformat; /* Start of format */ + int width, /* Width of field */ + prec; /* Number of characters of precision */ + char tformat[100], /* Temporary format string for sprintf() */ + temp[1024]; /* Buffer for formatted numbers */ + char *s; /* Pointer to string */ + int slen; /* Length of string */ + int bytes; /* Total number of bytes needed */ + + + /* + * Loop through the format string, formatting as needed... + */ + + bufptr = buffer; + bufend = buffer + bufsize - 1; + bytes = 0; + + while (*format) + { + if (*format == '%') + { + bufformat = format; + format ++; + + if (*format == '%') + { + *bufptr++ = *format++; + continue; + } + else if (strchr(" -+#\'", *format)) + sign = *format++; + else + sign = 0; + + width = 0; + while (isdigit(*format)) + width = width * 10 + *format++ - '0'; + + if (*format == '.') + { + format ++; + prec = 0; + + while (isdigit(*format)) + prec = prec * 10 + *format++ - '0'; + } + else + prec = -1; + + if (*format == 'l' && format[1] == 'l') + { + size = 'L'; + format += 2; + } + else if (*format == 'h' || *format == 'l' || *format == 'L') + size = *format++; + + if (!*format) + break; + + type = *format++; + + switch (type) + { + case 'E' : /* Floating point formats */ + case 'G' : + case 'e' : + case 'f' : + case 'g' : + if ((format - bufformat + 1) > sizeof(tformat) || + (width + 2) > sizeof(temp)) + break; + + strncpy(tformat, bufformat, format - bufformat); + tformat[format - bufformat] = '\0'; + + sprintf(temp, tformat, va_arg(ap, double)); + + bytes += strlen(temp); + + if (bufptr) + { + if ((bufptr + strlen(temp)) > bufend) + { + strncpy(bufptr, temp, bufend - bufptr); + bufptr = bufend; + break; + } + else + { + strcpy(bufptr, temp); + bufptr += strlen(temp); + } + } + break; + + case 'B' : /* Integer formats */ + case 'X' : + case 'b' : + case 'd' : + case 'i' : + case 'o' : + case 'u' : + case 'x' : + if ((format - bufformat + 1) > sizeof(tformat) || + (width + 2) > sizeof(temp)) + break; + + strncpy(tformat, bufformat, format - bufformat); + tformat[format - bufformat] = '\0'; + + sprintf(temp, tformat, va_arg(ap, int)); + + bytes += strlen(temp); + + if (bufptr) + { + if ((bufptr + strlen(temp)) > bufend) + { + strncpy(bufptr, temp, bufend - bufptr); + bufptr = bufend; + break; + } + else + { + strcpy(bufptr, temp); + bufptr += strlen(temp); + } + } + break; + + case 'p' : /* Pointer value */ + if ((format - bufformat + 1) > sizeof(tformat) || + (width + 2) > sizeof(temp)) + break; + + strncpy(tformat, bufformat, format - bufformat); + tformat[format - bufformat] = '\0'; + + sprintf(temp, tformat, va_arg(ap, void *)); + + bytes += strlen(temp); + + if (bufptr) + { + if ((bufptr + strlen(temp)) > bufend) + { + strncpy(bufptr, temp, bufend - bufptr); + bufptr = bufend; + break; + } + else + { + strcpy(bufptr, temp); + bufptr += strlen(temp); + } + } + break; + + case 'c' : /* Character or character array */ + bytes += width; + + if (bufptr) + { + if (width <= 1) + *bufptr++ = va_arg(ap, int); + else + { + if ((bufptr + width) > bufend) + width = bufend - bufptr; + + memcpy(bufptr, va_arg(ap, char *), width); + bufptr += width; + } + } + break; + + case 's' : /* String */ + if ((s = va_arg(ap, char *)) == NULL) + s = "(null)"; + + slen = strlen(s); + if (slen > width && prec != width) + width = slen; + + bytes += width; + + if (bufptr) + { + if ((bufptr + width) > bufend) + width = bufend - bufptr; + + if (slen > width) + slen = width; + + if (sign == '-') + { + strncpy(bufptr, s, slen); + memset(bufptr + slen, ' ', width - slen); + } + else + { + memset(bufptr, ' ', width - slen); + strncpy(bufptr + width - slen, s, slen); + } + + bufptr += width; + } + break; + + case 'n' : /* Output number of chars so far */ + if ((format - bufformat + 1) > sizeof(tformat) || + (width + 2) > sizeof(temp)) + break; + + strncpy(tformat, bufformat, format - bufformat); + tformat[format - bufformat] = '\0'; + + sprintf(temp, tformat, va_arg(ap, int)); + + bytes += strlen(temp); + + if (bufptr) + { + if ((bufptr + strlen(temp)) > bufend) + { + strncpy(bufptr, temp, bufend - bufptr); + bufptr = bufend; + break; + } + else + { + strcpy(bufptr, temp); + bufptr += strlen(temp); + } + } + break; + } + } + else + { + bytes ++; + + if (bufptr && bufptr < bufend) + *bufptr++ = *format++; + } + } + + /* + * Nul-terminate the string and return the number of characters needed. + */ + + *bufptr = '\0'; + + return (bytes); +} +#endif /* !HAVE_VSNPRINTF */ + + +/* + * End of "$Id$". + */ |