883 lines
15 KiB
C
883 lines
15 KiB
C
/*
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* Copyright (C) 2000-2005 Carsten Haitzler, Geoff Harrison and various contributors
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies of the Software, its documentation and marketing & publicity
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* materials, and acknowledgment shall be given in the documentation, materials
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* and software packages that this Software was used.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include "E.h"
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#include <sys/stat.h>
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#include <ctype.h>
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#include <dirent.h>
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#include <pwd.h>
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#include <time.h>
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const char *
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FileExtension(const char *file)
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{
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char *p;
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p = strrchr(file, '.');
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if (p != NULL)
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{
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return p + 1;
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}
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return "";
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}
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void
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Etmp(char *s)
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{
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static unsigned long n_calls = 0;
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if (!n_calls)
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n_calls = (unsigned long)time(NULL) + (unsigned long)getpid();
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Esnprintf(s, 1024, "%s/TMP_%lX", EDirUser(), n_calls);
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n_calls++;
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}
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void
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E_md(const char *s)
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{
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if ((!s) || (!*s))
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return;
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mkdir(s, S_IRWXU);
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}
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int
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exists(const char *s)
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{
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struct stat st;
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if ((!s) || (!*s))
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return 0;
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if (stat(s, &st) < 0)
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return 0;
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return 1;
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}
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void
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mkdirs(const char *s)
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{
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char ss[FILEPATH_LEN_MAX];
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int i, ii;
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i = 0;
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ii = 0;
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while (s[i])
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{
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ss[ii++] = s[i];
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ss[ii] = 0;
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if (s[i] == '/')
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{
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if (!exists(ss))
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E_md(ss);
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else if (!isdir(ss))
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return;
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}
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i++;
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}
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}
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int
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isfile(const char *s)
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{
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struct stat st;
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if ((!s) || (!*s))
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return 0;
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if (stat(s, &st) < 0)
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return 0;
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if (S_ISREG(st.st_mode))
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return 1;
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return 0;
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}
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int
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isdir(const char *s)
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{
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struct stat st;
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if ((!s) || (!*s))
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return 0;
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if (stat(s, &st) < 0)
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return 0;
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if (S_ISDIR(st.st_mode))
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return 1;
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return 0;
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}
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int
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isabspath(const char *path)
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{
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return path[0] == '/';
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}
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char **
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E_ls(const char *dir, int *num)
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{
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int i, dirlen;
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int done = 0;
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DIR *dirp;
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char **names;
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struct dirent *dp;
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if ((!dir) || (!*dir))
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return NULL;
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dirp = opendir(dir);
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if (!dirp)
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{
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*num = 0;
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return NULL;
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}
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/* count # of entries in dir (worst case) */
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for (dirlen = 0; (dp = readdir(dirp)) != NULL; dirlen++);
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if (!dirlen)
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{
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closedir(dirp);
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*num = dirlen;
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return NULL;
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}
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names = (char **)Emalloc(dirlen * sizeof(char *));
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if (!names)
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return NULL;
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rewinddir(dirp);
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for (i = 0; i < dirlen;)
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{
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dp = readdir(dirp);
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if (!dp)
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break;
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if ((strcmp(dp->d_name, ".")) && (strcmp(dp->d_name, "..")))
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{
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names[i] = Estrdup(dp->d_name);
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i++;
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}
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}
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if (i < dirlen)
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dirlen = i; /* dir got shorter... */
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closedir(dirp);
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*num = dirlen;
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/* do a simple bubble sort here to alphanumberic it */
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while (!done)
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{
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done = 1;
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for (i = 0; i < dirlen - 1; i++)
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{
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if (strcmp(names[i], names[i + 1]) > 0)
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{
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char *tmp;
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tmp = names[i];
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names[i] = names[i + 1];
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names[i + 1] = tmp;
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done = 0;
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}
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}
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}
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return names;
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}
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void
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E_rm(const char *s)
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{
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if ((!s) || (!*s))
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return;
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unlink(s);
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}
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void
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E_mv(const char *s, const char *ss)
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{
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if ((!s) || (!ss) || (!*s) || (!*ss))
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return;
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rename(s, ss);
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}
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void
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E_cp(const char *s, const char *ss)
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{
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int i;
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FILE *f, *ff;
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unsigned char buf[1];
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if ((!s) || (!ss) || (!*s) || (!*ss))
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return;
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if (!exists(s))
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return;
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i = filesize(s);
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f = fopen(s, "r");
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if (!f)
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return;
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ff = fopen(ss, "w");
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if (!ff)
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{
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fclose(f);
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return;
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}
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while (fread(buf, 1, 1, f))
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fwrite(buf, 1, 1, ff);
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fclose(f);
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fclose(ff);
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}
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time_t
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moddate(const char *s)
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{
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struct stat st;
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if ((!s) || (!*s))
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return 0;
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if (stat(s, &st) < 0)
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return 0;
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if (st.st_mtime > st.st_ctime)
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return st.st_mtime;
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return st.st_ctime;
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}
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int
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filesize(const char *s)
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{
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struct stat st;
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if ((!s) || (!*s))
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return 0;
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if (stat(s, &st) < 0)
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return 0;
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return (int)st.st_size;
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}
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int
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fileinode(const char *s)
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{
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struct stat st;
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if ((!s) || (!*s))
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return 0;
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if (stat(s, &st) < 0)
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return 0;
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return (int)st.st_ino;
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}
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int
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filedev_map(int dev)
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{
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#ifdef __linux__
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/* device numbers in the anonymous range can't be relied
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* upon, so map them all on a single one */
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switch (dev >> 8)
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{
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default:
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return dev;
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case 0:
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case 144:
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case 145:
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case 146:
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return 1;
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}
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#else
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return dev;
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#endif
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}
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int
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filedev(const char *s)
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{
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struct stat st;
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if ((!s) || (!*s))
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return 0;
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if (stat(s, &st) < 0)
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return 0;
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return filedev_map((int)st.st_dev);
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}
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void
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E_cd(const char *s)
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{
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if ((!s) || (!*s))
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return;
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chdir(s);
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}
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char *
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cwd(void)
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{
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char *s;
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char ss[FILEPATH_LEN_MAX];
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getcwd(ss, FILEPATH_LEN_MAX);
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s = Estrdup(ss);
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return s;
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}
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int
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permissions(const char *s)
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{
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struct stat st;
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if ((!s) || (!*s))
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return 0;
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if (stat(s, &st) < 0)
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return 0;
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return st.st_mode;
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}
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#if 0 /* Not used */
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int
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owner(const char *s)
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{
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struct stat st;
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if ((!s) || (!*s))
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return 0;
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if (stat(s, &st) < 0)
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return 0;
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return st.st_uid;
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}
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int
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group(const char *s)
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{
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struct stat st;
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if ((!s) || (!*s))
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return 0;
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if (stat(s, &st) < 0)
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return 0;
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return st.st_gid;
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}
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#endif
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char *
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username(int uid)
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{
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char *s;
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static int usr_uid = -1;
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static char *usr_s = NULL;
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struct passwd *pwd;
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if (usr_uid < 0)
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usr_uid = getuid();
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if ((uid == usr_uid) && (usr_s))
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return Estrdup(usr_s);
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pwd = getpwuid(uid);
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if (pwd)
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{
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s = Estrdup(pwd->pw_name);
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if (uid == usr_uid)
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usr_s = Estrdup(s);
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return s;
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}
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return Estrdup("unknown");
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}
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char *
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homedir(int uid)
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{
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char *s;
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static int usr_uid = -1;
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static char *usr_s = NULL;
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struct passwd *pwd;
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if (usr_uid < 0)
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usr_uid = getuid();
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if ((uid == usr_uid) && (usr_s))
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{
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return Estrdup(usr_s);
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}
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pwd = getpwuid(uid);
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if (pwd)
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{
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s = Estrdup(pwd->pw_dir);
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if (uid == usr_uid)
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usr_s = Estrdup(s);
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return s;
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}
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return Estrdup((getenv("TMPDIR") == NULL) ? "/tmp" : getenv("TMPDIR"));
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}
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char *
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usershell(int uid)
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{
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char *s;
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static int usr_uid = -1;
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static char *usr_s = NULL;
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struct passwd *pwd;
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if (usr_uid < 0)
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usr_uid = getuid();
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if ((uid == usr_uid) && (usr_s))
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return Estrdup(usr_s);
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pwd = getpwuid(uid);
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if (pwd)
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{
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if (!pwd->pw_shell)
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return Estrdup("/bin/sh");
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if (strlen(pwd->pw_shell) < 1)
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return Estrdup("/bin/sh");
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if (!(canexec(pwd->pw_shell)))
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return Estrdup("/bin/sh");
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s = Estrdup(pwd->pw_shell);
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if (uid == usr_uid)
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usr_s = Estrdup(s);
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return s;
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}
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return Estrdup("/bin/sh");
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}
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const char *
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atword(const char *s, int num)
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{
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int cnt, i;
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if (!s)
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return NULL;
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cnt = 0;
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i = 0;
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while (s[i])
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{
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if ((s[i] != ' ') && (s[i] != '\t'))
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{
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if (i == 0)
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cnt++;
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else if ((s[i - 1] == ' ') || (s[i - 1] == '\t'))
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cnt++;
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if (cnt == num)
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return &s[i];
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}
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i++;
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}
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return NULL;
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}
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const char *
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atchar(const char *s, char c)
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{
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int i;
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if (!s)
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return NULL;
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i = 0;
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while (s[i] != 0)
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{
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if (s[i] == c)
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return &s[i];
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i++;
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}
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return NULL;
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}
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void
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word(const char *s, int num, char *wd)
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{
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int cnt, i;
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const char *start, *finish, *ss;
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if (!s)
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return;
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if (!wd)
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return;
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if (num <= 0)
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{
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*wd = 0;
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return;
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}
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cnt = 0;
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i = 0;
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start = NULL;
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finish = NULL;
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ss = NULL;
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while (s[i])
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{
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if ((cnt == num) && ((s[i] == ' ') || (s[i] == '\t')))
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{
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finish = &s[i];
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break;
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}
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if ((s[i] != ' ') && (s[i] != '\t'))
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{
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if (i == 0)
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{
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cnt++;
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if (cnt == num)
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start = &s[i];
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}
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else if ((s[i - 1] == ' ') || (s[i - 1] == '\t'))
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{
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cnt++;
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if (cnt == num)
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start = &s[i];
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}
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}
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i++;
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}
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if (cnt == num)
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{
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if ((start) && (finish))
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{
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for (ss = start; ss < finish; ss++)
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*wd++ = *ss;
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}
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else if (start)
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{
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for (ss = start; *ss != 0; ss++)
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*wd++ = *ss;
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}
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*wd = 0;
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}
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}
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/* gets word number [num] in the string [s] and copies it into [wd] */
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/* wd is NULL terminated. If word [num] does not exist wd = "" */
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/* NB: this function now handles quotes so for a line: */
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/* Hello to "Welcome sir - may I Help" Shub Foo */
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/* Word 1 = Hello */
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/* Word 2 = to */
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/* Word 3 = Welcome sir - may I Help */
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/* Word 4 = Shub */
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/* word 5 = Foo */
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void
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fword(char *s, int num, char *wd)
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{
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char *cur, *start, *end;
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int count, inword, inquote, len;
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if (!s)
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return;
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if (!wd)
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return;
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*wd = 0;
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if (num <= 0)
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return;
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cur = s;
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count = 0;
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inword = 0;
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inquote = 0;
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start = NULL;
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end = NULL;
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while ((*cur) && (count < num))
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{
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if (inword)
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{
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if (inquote)
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{
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if (*cur == '"')
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{
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inquote = 0;
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inword = 0;
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end = cur;
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count++;
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}
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}
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else
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{
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if (isspace(*cur))
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{
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end = cur;
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inword = 0;
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count++;
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}
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}
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}
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else
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{
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if (!isspace(*cur))
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{
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if (*cur == '"')
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{
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inquote = 1;
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start = cur + 1;
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}
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else
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start = cur;
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inword = 1;
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}
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}
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if (count == num)
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break;
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cur++;
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}
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if (!start)
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return;
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if (!end)
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end = cur;
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if (end <= start)
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return;
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len = (int)(end - start);
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if (len > 4000)
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len = 4000;
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if (len > 0)
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{
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strncpy(wd, start, len);
|
|
wd[len] = 0;
|
|
}
|
|
}
|
|
|
|
char *
|
|
field(char *s, int fieldno)
|
|
{
|
|
char buf[4096];
|
|
|
|
buf[0] = 0;
|
|
fword(s, fieldno + 1, buf);
|
|
if (buf[0])
|
|
{
|
|
if ((!strcmp(buf, "NULL")) || (!strcmp(buf, "(null)")))
|
|
return NULL;
|
|
return Estrdup(buf);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
int
|
|
fillfield(char *s, int fieldno, char *buf)
|
|
{
|
|
if (!buf)
|
|
return 0;
|
|
buf[0] = 0;
|
|
fword(s, fieldno + 1, buf);
|
|
if (buf[0])
|
|
{
|
|
if ((!strcmp(buf, "NULL")) || (!strcmp(buf, "(null)")))
|
|
{
|
|
buf[0] = 0;
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
canread(const char *s)
|
|
{
|
|
if ((!s) || (!*s))
|
|
return 0;
|
|
|
|
if (!(permissions(s) & (S_IRUSR | S_IRGRP | S_IROTH)))
|
|
return 0;
|
|
|
|
return 1 + access(s, R_OK);
|
|
}
|
|
|
|
int
|
|
canwrite(const char *s)
|
|
{
|
|
if ((!s) || (!*s))
|
|
return 0;
|
|
|
|
if (!(permissions(s) & (S_IWUSR | S_IWGRP | S_IWOTH)))
|
|
return 0;
|
|
|
|
return 1 + access(s, W_OK);
|
|
}
|
|
|
|
int
|
|
canexec(const char *s)
|
|
{
|
|
if ((!s) || (!*s))
|
|
return 0;
|
|
|
|
if (!(permissions(s) & (S_IXUSR | S_IXGRP | S_IXOTH)))
|
|
return 0;
|
|
|
|
return 1 + access(s, X_OK);
|
|
}
|
|
|
|
char *
|
|
fileof(const char *path)
|
|
{
|
|
const char *s1, *s2;
|
|
|
|
s1 = strrchr(path, '/');
|
|
s1 = (s1) ? s1 + 1 : path;
|
|
s2 = strrchr(s1, '.');
|
|
if (!s2)
|
|
return Estrdup(s1);
|
|
|
|
return Estrndup(s1, s2 - s1);
|
|
}
|
|
|
|
char *
|
|
fullfileof(const char *path)
|
|
{
|
|
const char *s;
|
|
|
|
s = strrchr(path, '/');
|
|
return Estrdup((s) ? s + 1 : path);
|
|
}
|
|
|
|
char *
|
|
pathtoexec(const char *file)
|
|
{
|
|
char *p, *cp, *ep;
|
|
char *s;
|
|
int len, exelen;
|
|
|
|
if (isabspath(file))
|
|
{
|
|
if (canexec(file))
|
|
return Estrdup(file);
|
|
return NULL;
|
|
}
|
|
p = getenv("PATH");
|
|
if (!p)
|
|
return Estrdup(file);
|
|
if (!file)
|
|
return NULL;
|
|
|
|
cp = p;
|
|
exelen = strlen(file);
|
|
while ((ep = strchr(cp, ':')))
|
|
{
|
|
len = ep - cp;
|
|
s = Emalloc(len + 1);
|
|
if (s)
|
|
{
|
|
strncpy(s, cp, len);
|
|
s[len] = 0;
|
|
s = Erealloc(s, len + 2 + exelen);
|
|
strcat(s, "/");
|
|
strcat(s, file);
|
|
if (canexec(s))
|
|
return s;
|
|
Efree(s);
|
|
}
|
|
cp = ep + 1;
|
|
}
|
|
len = strlen(cp);
|
|
s = Emalloc(len + 1);
|
|
if (s)
|
|
{
|
|
strncpy(s, cp, len);
|
|
s[len] = 0;
|
|
s = Erealloc(s, len + 2 + exelen);
|
|
strcat(s, "/");
|
|
strcat(s, file);
|
|
if (canexec(s))
|
|
return s;
|
|
Efree(s);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
char *
|
|
pathtofile(const char *file)
|
|
{
|
|
char *p, *cp, *ep;
|
|
char *s;
|
|
int len, exelen;
|
|
|
|
if (isabspath(file))
|
|
{
|
|
if (exists(file))
|
|
return Estrdup(file);
|
|
}
|
|
p = getenv("PATH");
|
|
if (!p)
|
|
return Estrdup(file);
|
|
if (!file)
|
|
return NULL;
|
|
cp = p;
|
|
exelen = strlen(file);
|
|
while ((ep = strchr(cp, ':')))
|
|
{
|
|
len = ep - cp;
|
|
s = Emalloc(len + 1);
|
|
if (s)
|
|
{
|
|
strncpy(s, cp, len);
|
|
s[len] = 0;
|
|
s = Erealloc(s, len + 2 + exelen);
|
|
strcat(s, "/");
|
|
strcat(s, file);
|
|
if (exists(s))
|
|
return s;
|
|
Efree(s);
|
|
}
|
|
cp = ep + 1;
|
|
}
|
|
len = strlen(cp);
|
|
s = Emalloc(len + 1);
|
|
if (s)
|
|
{
|
|
strncpy(s, cp, len);
|
|
s[len] = 0;
|
|
s = Erealloc(s, len + 2 + exelen);
|
|
strcat(s, "/");
|
|
strcat(s, file);
|
|
if (exists(s))
|
|
return s;
|
|
Efree(s);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
int
|
|
findLocalizedFile(char *fname)
|
|
{
|
|
char *tmp, *lang, *p[3];
|
|
int i;
|
|
|
|
if (!(lang = setlocale(LC_MESSAGES, NULL)))
|
|
return 0;
|
|
|
|
tmp = Estrdup(fname);
|
|
lang = Estrdup(lang); /* lang may be in static space, thus it must
|
|
* * * be duplicated before we change it below */
|
|
p[0] = lang + strlen(lang);
|
|
p[1] = strchr(lang, '.');
|
|
p[2] = strchr(lang, '_');
|
|
|
|
for (i = 0; i < 3; i++)
|
|
{
|
|
if (p[i] == NULL)
|
|
continue;
|
|
|
|
*p[i] = '\0';
|
|
sprintf(fname, "%s.%s", tmp, lang);
|
|
if (isfile(fname))
|
|
{
|
|
free(tmp);
|
|
free(lang);
|
|
return 1;
|
|
}
|
|
}
|
|
strcpy(fname, tmp);
|
|
free(tmp);
|
|
free(lang);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#if 0 /* Not used */
|
|
void
|
|
rmrf(const char *path)
|
|
{
|
|
char s[FILEPATH_LEN_MAX];
|
|
|
|
Esnprintf(s, sizeof(s), "/bin/rm -rf %s", path);
|
|
system(s);
|
|
}
|
|
#endif
|