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-rw-r--r--tools/gator/daemon/mxml/mxml-string.c476
1 files changed, 476 insertions, 0 deletions
diff --git a/tools/gator/daemon/mxml/mxml-string.c b/tools/gator/daemon/mxml/mxml-string.c
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+/*
+ * "$Id: mxml-string.c 424 2010-12-25 16:21:50Z mike $"
+ *
+ * String functions for Mini-XML, a small XML-like file parsing library.
+ *
+ * Copyright 2003-2010 by Michael R Sweet.
+ *
+ * These coded instructions, statements, and computer programs are the
+ * property of Michael R Sweet and are protected by Federal copyright
+ * law. Distribution and use rights are outlined in the file "COPYING"
+ * which should have been included with this file. If this file is
+ * missing or damaged, see the license at:
+ *
+ * http://www.minixml.org/
+ *
+ * Contents:
+ *
+ * _mxml_snprintf() - Format a string.
+ * _mxml_strdup() - Duplicate a string.
+ * _mxml_strdupf() - Format and duplicate a string.
+ * _mxml_vsnprintf() - Format a string into a fixed size buffer.
+ * _mxml_vstrdupf() - Format and duplicate a string.
+ */
+
+/*
+ * Include necessary headers...
+ */
+
+#include "config.h"
+
+
+/*
+ * The va_copy macro is part of C99, but many compilers don't implement it.
+ * Provide a "direct assignment" implmentation when va_copy isn't defined...
+ */
+
+#ifndef va_copy
+# ifdef __va_copy
+# define va_copy(dst,src) __va_copy(dst,src)
+# else
+# define va_copy(dst,src) memcpy(&dst, &src, sizeof(va_list))
+# endif /* __va_copy */
+#endif /* va_copy */
+
+
+#ifndef HAVE_SNPRINTF
+/*
+ * '_mxml_snprintf()' - Format a string.
+ */
+
+int /* O - Number of bytes formatted */
+_mxml_snprintf(char *buffer, /* I - Output buffer */
+ size_t bufsize, /* I - Size of output buffer */
+ const char *format, /* I - Printf-style format string */
+ ...) /* I - Additional arguments as needed */
+{
+ va_list ap; /* Argument list */
+ int bytes; /* Number of bytes formatted */
+
+
+ va_start(ap, format);
+ bytes = vsnprintf(buffer, bufsize, format, ap);
+ va_end(ap);
+
+ return (bytes);
+}
+#endif /* !HAVE_SNPRINTF */
+
+
+/*
+ * '_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 */
+ ...) /* I - Additional arguments as needed */
+{
+ va_list ap; /* Pointer to additional arguments */
+ char *s; /* Pointer to formatted string */
+
+
+ /*
+ * Get a pointer to the additional arguments, format the string,
+ * and return it...
+ */
+
+ va_start(ap, format);
+ s = _mxml_vstrdupf(format, ap);
+ va_end(ap);
+
+ return (s);
+}
+
+
+#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 */
+ int width, /* Width of field */
+ prec; /* Number of characters of precision */
+ char tformat[100], /* Temporary format string for sprintf() */
+ *tptr, /* Pointer into temporary format */
+ 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 == '%')
+ {
+ tptr = tformat;
+ *tptr++ = *format++;
+
+ if (*format == '%')
+ {
+ if (bufptr && bufptr < bufend) *bufptr++ = *format;
+ bytes ++;
+ format ++;
+ continue;
+ }
+ else if (strchr(" -+#\'", *format))
+ {
+ *tptr++ = *format;
+ sign = *format++;
+ }
+ else
+ sign = 0;
+
+ if (*format == '*')
+ {
+ /*
+ * Get width from argument...
+ */
+
+ format ++;
+ width = va_arg(ap, int);
+
+ snprintf(tptr, sizeof(tformat) - (tptr - tformat), "%d", width);
+ tptr += strlen(tptr);
+ }
+ else
+ {
+ width = 0;
+
+ while (isdigit(*format & 255))
+ {
+ if (tptr < (tformat + sizeof(tformat) - 1))
+ *tptr++ = *format;
+
+ width = width * 10 + *format++ - '0';
+ }
+ }
+
+ if (*format == '.')
+ {
+ if (tptr < (tformat + sizeof(tformat) - 1))
+ *tptr++ = *format;
+
+ format ++;
+
+ if (*format == '*')
+ {
+ /*
+ * Get precision from argument...
+ */
+
+ format ++;
+ prec = va_arg(ap, int);
+
+ snprintf(tptr, sizeof(tformat) - (tptr - tformat), "%d", prec);
+ tptr += strlen(tptr);
+ }
+ else
+ {
+ prec = 0;
+
+ while (isdigit(*format & 255))
+ {
+ if (tptr < (tformat + sizeof(tformat) - 1))
+ *tptr++ = *format;
+
+ prec = prec * 10 + *format++ - '0';
+ }
+ }
+ }
+ else
+ prec = -1;
+
+ if (*format == 'l' && format[1] == 'l')
+ {
+ size = 'L';
+
+ if (tptr < (tformat + sizeof(tformat) - 2))
+ {
+ *tptr++ = 'l';
+ *tptr++ = 'l';
+ }
+
+ format += 2;
+ }
+ else if (*format == 'h' || *format == 'l' || *format == 'L')
+ {
+ if (tptr < (tformat + sizeof(tformat) - 1))
+ *tptr++ = *format;
+
+ size = *format++;
+ }
+
+ if (!*format)
+ break;
+
+ if (tptr < (tformat + sizeof(tformat) - 1))
+ *tptr++ = *format;
+
+ type = *format++;
+ *tptr = '\0';
+
+ switch (type)
+ {
+ case 'E' : /* Floating point formats */
+ case 'G' :
+ case 'e' :
+ case 'f' :
+ case 'g' :
+ if ((width + 2) > sizeof(temp))
+ break;
+
+ sprintf(temp, tformat, va_arg(ap, double));
+
+ bytes += strlen(temp);
+
+ if (bufptr)
+ {
+ if ((bufptr + strlen(temp)) > bufend)
+ {
+ strncpy(bufptr, temp, (size_t)(bufend - bufptr));
+ bufptr = bufend;
+ }
+ 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 ((width + 2) > sizeof(temp))
+ break;
+
+#ifdef HAVE_LONG_LONG
+ if (size == 'L')
+ sprintf(temp, tformat, va_arg(ap, long long));
+ else
+#endif /* HAVE_LONG_LONG */
+ sprintf(temp, tformat, va_arg(ap, int));
+
+ bytes += strlen(temp);
+
+ if (bufptr)
+ {
+ if ((bufptr + strlen(temp)) > bufend)
+ {
+ strncpy(bufptr, temp, (size_t)(bufend - bufptr));
+ bufptr = bufend;
+ }
+ else
+ {
+ strcpy(bufptr, temp);
+ bufptr += strlen(temp);
+ }
+ }
+ break;
+
+ case 'p' : /* Pointer value */
+ if ((width + 2) > sizeof(temp))
+ break;
+
+ sprintf(temp, tformat, va_arg(ap, void *));
+
+ bytes += strlen(temp);
+
+ if (bufptr)
+ {
+ if ((bufptr + strlen(temp)) > bufend)
+ {
+ strncpy(bufptr, temp, (size_t)(bufend - bufptr));
+ bufptr = bufend;
+ }
+ 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 *), (size_t)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, (size_t)slen);
+ memset(bufptr + slen, ' ', (size_t)(width - slen));
+ }
+ else
+ {
+ memset(bufptr, ' ', (size_t)(width - slen));
+ strncpy(bufptr + width - slen, s, (size_t)slen);
+ }
+
+ bufptr += width;
+ }
+ break;
+
+ case 'n' : /* Output number of chars so far */
+ *(va_arg(ap, int *)) = bytes;
+ break;
+ }
+ }
+ else
+ {
+ bytes ++;
+
+ if (bufptr && bufptr < bufend)
+ *bufptr++ = *format;
+
+ format ++;
+ }
+ }
+
+ /*
+ * Nul-terminate the string and return the number of characters needed.
+ */
+
+ *bufptr = '\0';
+
+ return (bytes);
+}
+#endif /* !HAVE_VSNPRINTF */
+
+
+/*
+ * '_mxml_vstrdupf()' - Format and duplicate a string.
+ */
+
+char * /* O - New string pointer */
+_mxml_vstrdupf(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 */
+ va_list apcopy; /* Copy of argument list */
+
+
+ /*
+ * First format with a tiny buffer; this will tell us how many bytes are
+ * needed...
+ */
+
+ va_copy(apcopy, ap);
+ bytes = vsnprintf(temp, sizeof(temp), format, apcopy);
+
+ 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);
+}
+
+
+/*
+ * End of "$Id: mxml-string.c 424 2010-12-25 16:21:50Z mike $".
+ */
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