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1.1 |
/* |
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* fptools.c, some helper functions for getcgi.c and uu(en|de)view |
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* |
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1.2 |
* Distributed under the terms of the GNU General Public License. |
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* Use and be happy. |
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1.1 |
*/ |
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#ifdef HAVE_CONFIG_H |
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#include "config.h" |
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#endif |
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#ifdef SYSTEM_WINDLL |
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#include <windows.h> |
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#endif |
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#ifdef SYSTEM_OS2 |
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#include <os2.h> |
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#endif |
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/* |
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* This file provides replacements for some handy functions that aren't |
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* available on all systems, like most of the <string.h> functions. They |
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* should behave exactly as their counterparts. There are also extensions |
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* that aren't portable at all (like strirstr etc.). |
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* The proper behaviour in a configure script is as follows: |
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1.5 |
* AC_CHECK_FUNC(strrchr,AC_DEFINE(strrchr,_FP_strrchr)) |
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1.1 |
* This way, the (probably less efficient) replacements will only be used |
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* where it is not provided by the default libraries. Be aware that this |
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* does not work with replacements that just shadow wrong behaviour (like |
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1.5 |
* _FP_free) or provide extended functionality (FP_gets). |
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1.1 |
* The above is not used in the uuenview/uudeview configuration script, |
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* since both only use the replacement functions in non-performance-cri- |
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1.5 |
* tical sections (except for _FP_tempnam and FP_strerror, where some |
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1.1 |
* functionality of the original would be lost). |
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*/ |
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#include <stdio.h> |
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#include <ctype.h> |
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#ifdef STDC_HEADERS |
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#include <stdlib.h> |
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#include <string.h> |
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#endif |
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#ifdef HAVE_MALLOC_H |
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#include <malloc.h> |
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#endif |
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#ifdef HAVE_UNISTD_H |
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#include <unistd.h> |
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#endif |
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#ifdef HAVE_MEMORY_H |
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#include <memory.h> |
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#endif |
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#include <fptools.h> |
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#if 0 |
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#ifdef SYSTEM_WINDLL |
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BOOL _export WINAPI |
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DllEntryPoint (HINSTANCE hInstance, DWORD seginfo, |
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LPVOID lpCmdLine) |
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{ |
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/* Don't do anything, so just return true */ |
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return TRUE; |
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} |
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#endif |
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#endif |
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1.7 |
char * fptools_id = "$Id$"; |
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1.1 |
|
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/* |
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* some versions of free can't handle a NULL pointer properly |
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* (ANSI says, free ignores a NULL pointer, but some machines |
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* prefer to SIGSEGV on it) |
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*/ |
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void TOOLEXPORT |
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1.5 |
_FP_free (void *ptr) |
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1.1 |
{ |
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if (ptr) free (ptr); |
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} |
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/* |
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* This is non-standard, so I'm defining my own |
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*/ |
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char * TOOLEXPORT |
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root |
1.5 |
_FP_strdup (char *string) |
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1.1 |
{ |
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char *result; |
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if (string == NULL) |
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return NULL; |
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if ((result = (char *) malloc (strlen (string) + 1)) == NULL) |
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return NULL; |
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strcpy (result, string); |
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return result; |
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} |
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/* |
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* limited-length string copy. this function behaves differently from |
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* the original in that the dest string is always terminated with a |
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* NULL character. |
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*/ |
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char * TOOLEXPORT |
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1.5 |
_FP_strncpy (char *dest, char *src, int length) |
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1.1 |
{ |
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char *odest=dest; |
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if (src == NULL || dest == NULL || length-- <= 0) |
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return dest; |
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while (length-- && *src) |
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*dest++ = *src++; |
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*dest++ = '\0'; |
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return odest; |
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} |
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/* |
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* duplicate a memory area |
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*/ |
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void * TOOLEXPORT |
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1.5 |
_FP_memdup (void *ptr, int len) |
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1.1 |
{ |
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void *result; |
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129 |
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if (ptr == NULL) |
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return NULL; |
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if ((result = malloc (len)) == NULL) |
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return NULL; |
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memcpy (result, ptr, len); |
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return result; |
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} |
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/* |
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* case-insensitive compare |
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*/ |
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int TOOLEXPORT |
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root |
1.5 |
_FP_stricmp (char *str1, char *str2) |
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1.1 |
{ |
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if (str1==NULL || str2==NULL) |
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return -1; |
148 |
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149 |
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while (*str1) { |
150 |
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if (tolower(*str1) != tolower(*str2)) |
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break; |
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str1++; |
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str2++; |
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} |
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return (tolower (*str1) - tolower (*str2)); |
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} |
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int TOOLEXPORT |
159 |
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1.5 |
_FP_strnicmp (char *str1, char *str2, int count) |
160 |
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1.1 |
{ |
161 |
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if (str1==NULL || str2==NULL) |
162 |
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return -1; |
163 |
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164 |
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while (*str1 && count) { |
165 |
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if (tolower(*str1) != tolower(*str2)) |
166 |
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break; |
167 |
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str1++; |
168 |
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str2++; |
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count--; |
170 |
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} |
171 |
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return count ? (tolower (*str1) - tolower (*str2)) : 0; |
172 |
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} |
173 |
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174 |
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/* |
175 |
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* autoconf says this function might be a compatibility problem |
176 |
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*/ |
177 |
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char * TOOLEXPORT |
179 |
root |
1.5 |
_FP_strstr (char *str1, char *str2) |
180 |
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1.1 |
{ |
181 |
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char *ptr1, *ptr2; |
182 |
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183 |
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if (str1==NULL) |
184 |
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return NULL; |
185 |
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if (str2==NULL) |
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return str1; |
187 |
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188 |
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while (*(ptr1=str1)) { |
189 |
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for (ptr2=str2; |
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*ptr1 && *ptr2 && *ptr1==*ptr2; |
191 |
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ptr1++, ptr2++) |
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/* empty loop */ ; |
193 |
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194 |
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if (*ptr2 == '\0') |
195 |
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return str1; |
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str1++; |
197 |
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} |
198 |
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return NULL; |
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} |
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201 |
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char * TOOLEXPORT |
202 |
root |
1.5 |
_FP_strpbrk (char *str, char *accept) |
203 |
root |
1.1 |
{ |
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char *ptr; |
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206 |
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if (str == NULL) |
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return NULL; |
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if (accept == NULL || *accept == '\0') |
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return str; |
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for (; *str; str++) |
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for (ptr=accept; *ptr; ptr++) |
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if (*str == *ptr) |
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return str; |
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return NULL; |
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} |
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219 |
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/* |
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* autoconf also complains about this one |
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*/ |
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char * TOOLEXPORT |
224 |
root |
1.5 |
_FP_strtok (char *str1, char *str2) |
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root |
1.1 |
{ |
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static char *optr; |
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char *ptr; |
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if (str2 == NULL) |
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return NULL; |
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232 |
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if (str1) { |
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optr = str1; |
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} |
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else { |
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if (*optr == '\0') |
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return NULL; |
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} |
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while (*optr && strchr (str2, *optr)) /* look for beginning of token */ |
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optr++; |
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243 |
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if (*optr == '\0') /* no token found */ |
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return NULL; |
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ptr = optr; |
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while (*optr && strchr (str2, *optr) == NULL) /* look for end of token */ |
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optr++; |
249 |
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250 |
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if (*optr) { |
251 |
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*optr++ = '\0'; |
252 |
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} |
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return ptr; |
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} |
255 |
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256 |
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/* |
257 |
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* case insensitive strstr. |
258 |
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*/ |
259 |
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260 |
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char * TOOLEXPORT |
261 |
root |
1.5 |
_FP_stristr (char *str1, char *str2) |
262 |
root |
1.1 |
{ |
263 |
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char *ptr1, *ptr2; |
264 |
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265 |
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if (str1==NULL) |
266 |
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return NULL; |
267 |
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if (str2==NULL) |
268 |
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return str1; |
269 |
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270 |
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while (*(ptr1=str1)) { |
271 |
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for (ptr2=str2; |
272 |
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*ptr1 && *ptr2 && tolower(*ptr1)==tolower(*ptr2); |
273 |
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ptr1++, ptr2++) |
274 |
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/* empty loop */ ; |
275 |
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276 |
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if (*ptr2 == '\0') |
277 |
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return str1; |
278 |
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str1++; |
279 |
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} |
280 |
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return NULL; |
281 |
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} |
282 |
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283 |
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/* |
284 |
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* Nice fake of the real (non-standard) one |
285 |
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*/ |
286 |
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287 |
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char * TOOLEXPORT |
288 |
root |
1.5 |
_FP_strrstr (char *ptr, char *str) |
289 |
root |
1.1 |
{ |
290 |
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char *found=NULL, *new, *iter=ptr; |
291 |
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292 |
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if (ptr==NULL || str==NULL) |
293 |
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return NULL; |
294 |
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295 |
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if (*str == '\0') |
296 |
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return ptr; |
297 |
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298 |
root |
1.5 |
while ((new = _FP_strstr (iter, str)) != NULL) { |
299 |
root |
1.1 |
found = new; |
300 |
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iter = new + 1; |
301 |
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} |
302 |
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return found; |
303 |
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} |
304 |
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305 |
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char * TOOLEXPORT |
306 |
root |
1.5 |
_FP_strirstr (char *ptr, char *str) |
307 |
root |
1.1 |
{ |
308 |
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char *found=NULL, *iter=ptr, *new; |
309 |
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310 |
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if (ptr==NULL || str==NULL) |
311 |
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return NULL; |
312 |
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if (*str == '\0') |
313 |
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return ptr; |
314 |
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315 |
root |
1.5 |
while ((new = _FP_stristr (iter, str)) != NULL) { |
316 |
root |
1.1 |
found = new; |
317 |
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iter = new + 1; |
318 |
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} |
319 |
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return found; |
320 |
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} |
321 |
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322 |
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/* |
323 |
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* convert whole string to case |
324 |
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*/ |
325 |
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326 |
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char * TOOLEXPORT |
327 |
root |
1.5 |
_FP_stoupper (char *input) |
328 |
root |
1.1 |
{ |
329 |
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char *iter = input; |
330 |
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331 |
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if (input == NULL) |
332 |
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return NULL; |
333 |
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334 |
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while (*iter) { |
335 |
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*iter = toupper (*iter); |
336 |
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iter++; |
337 |
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} |
338 |
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return input; |
339 |
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} |
340 |
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341 |
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char * TOOLEXPORT |
342 |
root |
1.5 |
_FP_stolower (char *input) |
343 |
root |
1.1 |
{ |
344 |
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char *iter = input; |
345 |
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346 |
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if (input == NULL) |
347 |
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return NULL; |
348 |
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349 |
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while (*iter) { |
350 |
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*iter = tolower (*iter); |
351 |
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iter++; |
352 |
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} |
353 |
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return input; |
354 |
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} |
355 |
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|
356 |
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/* |
357 |
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* string matching with wildcards |
358 |
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*/ |
359 |
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|
360 |
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int TOOLEXPORT |
361 |
root |
1.5 |
_FP_strmatch (char *string, char *pattern) |
362 |
root |
1.1 |
{ |
363 |
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char *p1 = string, *p2 = pattern; |
364 |
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|
365 |
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if (pattern==NULL || string==NULL) |
366 |
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return 0; |
367 |
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368 |
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while (*p1 && *p2) { |
369 |
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if (*p2 == '?') { |
370 |
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p1++; p2++; |
371 |
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} |
372 |
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else if (*p2 == '*') { |
373 |
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if (*++p2 == '\0') |
374 |
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return 1; |
375 |
|
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while (*p1 && *p1 != *p2) |
376 |
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p1++; |
377 |
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} |
378 |
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else if (*p1 == *p2) { |
379 |
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p1++; p2++; |
380 |
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} |
381 |
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else |
382 |
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return 0; |
383 |
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} |
384 |
|
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if (*p1 || *p2) |
385 |
|
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return 0; |
386 |
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|
387 |
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return 1; |
388 |
|
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} |
389 |
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|
390 |
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char * TOOLEXPORT |
391 |
root |
1.5 |
_FP_strrchr (char *string, int tc) |
392 |
root |
1.1 |
{ |
393 |
|
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char *ptr; |
394 |
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|
395 |
root |
1.7 |
if (string == NULL || !*string) |
396 |
root |
1.1 |
return NULL; |
397 |
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|
398 |
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ptr = string + strlen (string) - 1; |
399 |
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|
400 |
|
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while (ptr != string && *ptr != tc) |
401 |
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ptr--; |
402 |
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|
403 |
|
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if (*ptr == tc) |
404 |
|
|
return ptr; |
405 |
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|
406 |
|
|
return NULL; |
407 |
|
|
} |
408 |
|
|
|
409 |
|
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/* |
410 |
|
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* strip directory information from a filename. Works only on DOS and |
411 |
|
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* Unix systems so far ... |
412 |
|
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*/ |
413 |
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|
414 |
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char * TOOLEXPORT |
415 |
root |
1.5 |
_FP_cutdir (char *filename) |
416 |
root |
1.1 |
{ |
417 |
|
|
char *ptr; |
418 |
|
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|
419 |
|
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if (filename == NULL) |
420 |
|
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return NULL; |
421 |
|
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|
422 |
root |
1.5 |
if ((ptr = _FP_strrchr (filename, '/')) != NULL) |
423 |
root |
1.1 |
ptr++; |
424 |
root |
1.5 |
else if ((ptr = _FP_strrchr (filename, '\\')) != NULL) |
425 |
root |
1.1 |
ptr++; |
426 |
|
|
else |
427 |
|
|
ptr = filename; |
428 |
|
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|
429 |
|
|
return ptr; |
430 |
|
|
} |
431 |
|
|
|
432 |
|
|
/* |
433 |
|
|
* My own fgets function. It handles all kinds of line terminators |
434 |
|
|
* properly: LF (Unix), CRLF (DOS) and CR (Mac). In all cases, the |
435 |
|
|
* terminator is replaced by a single LF |
436 |
|
|
*/ |
437 |
|
|
|
438 |
|
|
char * TOOLEXPORT |
439 |
root |
1.5 |
_FP_fgets (char *buf, int n, FILE *stream) |
440 |
root |
1.1 |
{ |
441 |
|
|
char *obp = buf; |
442 |
|
|
int c; |
443 |
root |
1.6 |
|
444 |
|
|
/* shield against buffer overflows caused by "255 - bytes_left"-kind of bugs when bytes_left > 255 */ |
445 |
|
|
if (n <= 0) |
446 |
|
|
return NULL; |
447 |
root |
1.1 |
|
448 |
|
|
if (feof (stream)) |
449 |
|
|
return NULL; |
450 |
|
|
|
451 |
root |
1.8 |
while (--n && !feof (stream)) { |
452 |
root |
1.1 |
if ((c = fgetc (stream)) == EOF) { |
453 |
|
|
if (ferror (stream)) |
454 |
|
|
return NULL; |
455 |
|
|
else { |
456 |
|
|
if (obp == buf) |
457 |
|
|
return NULL; |
458 |
|
|
*buf = '\0'; |
459 |
|
|
return obp; |
460 |
|
|
} |
461 |
|
|
} |
462 |
|
|
if (c == '\015') { /* CR */ |
463 |
|
|
/* |
464 |
|
|
* Peek next character. If it's no LF, push it back. |
465 |
|
|
* ungetc(EOF, stream) is handled correctly according |
466 |
|
|
* to the manual page |
467 |
|
|
*/ |
468 |
|
|
if ((c = fgetc (stream)) != '\012') |
469 |
|
|
if (!feof (stream)) |
470 |
|
|
ungetc (c, stream); |
471 |
|
|
*buf++ = '\012'; |
472 |
|
|
*buf = '\0'; |
473 |
|
|
return obp; |
474 |
|
|
} |
475 |
|
|
else if (c == '\012') { /* LF */ |
476 |
|
|
*buf++ = '\012'; |
477 |
|
|
*buf = '\0'; |
478 |
|
|
return obp; |
479 |
|
|
} |
480 |
|
|
/* |
481 |
|
|
* just another standard character |
482 |
|
|
*/ |
483 |
|
|
*buf++ = c; |
484 |
|
|
} |
485 |
root |
1.8 |
|
486 |
root |
1.1 |
/* |
487 |
|
|
* n-1 characters already transferred |
488 |
|
|
*/ |
489 |
root |
1.8 |
|
490 |
root |
1.1 |
*buf = '\0'; |
491 |
root |
1.8 |
|
492 |
|
|
/* |
493 |
|
|
* If a line break is coming up, read it |
494 |
|
|
*/ |
495 |
|
|
|
496 |
|
|
if (!feof (stream)) { |
497 |
|
|
if ((c = fgetc (stream)) == '\015' && !feof (stream)) { |
498 |
|
|
if ((c = fgetc (stream)) != '\012' && !feof (stream)) { |
499 |
|
|
ungetc (c, stream); |
500 |
|
|
} |
501 |
|
|
} |
502 |
|
|
else if (c != '\012' && !feof (stream)) { |
503 |
|
|
ungetc (c, stream); |
504 |
|
|
} |
505 |
|
|
} |
506 |
root |
1.1 |
|
507 |
|
|
return obp; |
508 |
|
|
} |
509 |
|
|
|
510 |
|
|
/* |
511 |
|
|
* A replacement strerror function that just returns the error code |
512 |
|
|
*/ |
513 |
|
|
|
514 |
|
|
char * TOOLEXPORT |
515 |
root |
1.5 |
_FP_strerror (int errcode) |
516 |
root |
1.1 |
{ |
517 |
|
|
static char number[8]; |
518 |
|
|
|
519 |
|
|
sprintf (number, "%03d", errcode); |
520 |
|
|
|
521 |
|
|
return number; |
522 |
|
|
} |
523 |
root |
1.3 |
#ifndef HAVE_MKSTEMP |
524 |
root |
1.1 |
/* |
525 |
|
|
* tempnam is not ANSI, but tmpnam is. Ignore the prefix here. |
526 |
|
|
*/ |
527 |
|
|
|
528 |
|
|
char * TOOLEXPORT |
529 |
root |
1.5 |
_FP_tempnam (char *dir, char *pfx) |
530 |
root |
1.1 |
{ |
531 |
root |
1.5 |
return _FP_strdup (tmpnam (NULL)); |
532 |
root |
1.1 |
} |
533 |
root |
1.3 |
#endif /* HAVE_MKSTEMP */ |