Add strlcat() and strlcpy(), might convert to them in the future

This commit is contained in:
Berke Viktor 2012-09-24 02:39:52 +02:00
parent ba0bcc9214
commit 2c2419f230
6 changed files with 97 additions and 1 deletions

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@ -28,6 +28,7 @@ EXTRA_DIST = \
servlist.h \
ssl.h \
ssl.c \
strlutil.c \
text.h \
textenums.h \
textevents.h \
@ -54,7 +55,7 @@ SUBDIRS = $(dbusdir) .
libxchatcommon_a_SOURCES = cfgfiles.c chanopt.c ctcp.c dcc.c history.c ignore.c \
inbound.c modes.c msproxy.c network.c notify.c outbound.c \
plugin.c plugin-timer.c proto-irc.c server.c servlist.c $(ssl_c) \
text.c tree.c url.c userlist.c util.c xchat.c
strlutil.c text.c tree.c url.c userlist.c util.c xchat.c
libxchatcommon_a_CFLAGS = $(LIBPROXY_CFLAGS)
textevents: make-te

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@ -33,6 +33,7 @@
<ClInclude Include="server.h" />
<ClInclude Include="servlist.h" />
<ClInclude Include="ssl.h" />
<ClInclude Include="strlutil.h" />
<ClInclude Include="text.h" />
<ClInclude Include="textenums.h" />
<ClInclude Include="textevents.h" />
@ -65,6 +66,7 @@
<ClCompile Include="server.c" />
<ClCompile Include="servlist.c" />
<ClCompile Include="ssl.c" />
<ClCompile Include="strlutil.c" />
<ClCompile Include="text.c" />
<ClCompile Include="thread.c" />
<ClCompile Include="tree.c" />

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@ -110,6 +110,9 @@
<ClInclude Include="..\..\config.h">
<Filter>Header Files</Filter>
</ClInclude>
<ClInclude Include="strlutil.h">
<Filter>Header Files</Filter>
</ClInclude>
</ItemGroup>
<ItemGroup>
<ClCompile Include="cfgfiles.c">
@ -190,5 +193,8 @@
<ClCompile Include="xchat.c">
<Filter>Source Files</Filter>
</ClCompile>
<ClCompile Include="strlutil.c">
<Filter>Source Files</Filter>
</ClCompile>
</ItemGroup>
</Project>

84
src/common/strlutil.c Normal file
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@ -0,0 +1,84 @@
/*
* Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <string.h>
/*
* Appends src to string dst of size siz (unlike strncat, siz is the
* full size of dst, not space left). At most siz-1 characters
* will be copied. Always NUL terminates (unless siz <= strlen(dst)).
* Returns strlen(src) + MIN(siz, strlen(initial dst)).
* If retval >= siz, truncation occurred.
*/
size_t
strlcat(char *dst, const char *src, size_t siz)
{
char *d = dst;
const char *s = src;
size_t n = siz;
size_t dlen;
/* Find the end of dst and adjust bytes left but don't go past end */
while (n-- != 0 && *d != '\0')
d++;
dlen = d - dst;
n = siz - dlen;
if (n == 0)
return(dlen + strlen(s));
while (*s != '\0') {
if (n != 1) {
*d++ = *s;
n--;
}
s++;
}
*d = '\0';
return(dlen + (s - src)); /* count does not include NUL */
}
/*
* Copy src to string dst of size siz. At most siz-1 characters
* will be copied. Always NUL terminates (unless siz == 0).
* Returns strlen(src); if retval >= siz, truncation occurred.
*/
size_t
strlcpy(char *dst, const char *src, size_t siz)
{
char *d = dst;
const char *s = src;
size_t n = siz;
/* Copy as many bytes as will fit */
if (n != 0) {
while (--n != 0) {
if ((*d++ = *s++) == '\0')
break;
}
}
/* Not enough room in dst, add NUL and traverse rest of src */
if (n == 0) {
if (siz != 0)
*d = '\0'; /* NUL-terminate dst */
while (*s++)
;
}
return(s - src - 1); /* count does not include NUL */
}

2
src/common/strlutil.h Normal file
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@ -0,0 +1,2 @@
size_t strlcat(char *dst, const char *src, size_t siz);
size_t strlcpy(char *dst, const char *src, size_t siz);

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@ -14,6 +14,7 @@
#ifndef XCHAT_UTIL_H
#define XCHAT_UTIL_H
#include "strlutil.h"
#define rfc_tolower(c) (rfc_tolowertab[(unsigned char)(c)])
extern const unsigned char rfc_tolowertab[];