kc3-lang/gnulib/lib/findprog.c

• Show log

  Commit

• Hash : 44b65c48
  Author :
  Date : 2018-05-03T23:09:42
  

  Simplify code. Drop support for Borland C++ on Windows.
  
  Reported by Gisle Vanem <gisle.vanem@gmail.com>.
  
  * lib/accept4.c: Simplify 'defined _WIN32 || defined __WIN32__' to just
  'defined _WIN32'.
  * lib/canonicalize-lgpl.c: Likewise.
  * lib/classpath.c: Likewise.
  * lib/clean-temp.c: Likewise.
  * lib/csharpexec.c: Likewise.
  * lib/ctime.c: Likewise.
  * lib/dosname.h: Likewise.
  * lib/dup2.c: Likewise.
  * lib/errno.in.h: Likewise.
  * lib/error.c: Likewise.
  * lib/euidaccess.c: Likewise.
  * lib/execute.c: Likewise.
  * lib/fcntl.in.h: Likewise.
  * lib/fcntl.c: Likewise.
  * lib/filename.h: Likewise.
  * lib/findprog.c: Likewise.
  * lib/flock.c: Likewise.
  * lib/fopen.c: Likewise.
  * lib/freopen.c: Likewise.
  * lib/fstat.c: Likewise.
  * lib/fsync.c: Likewise.
  * lib/gc-gnulib.c: Likewise.
  * lib/get-rusage-data.c: Likewise.
  * lib/getaddrinfo.c: Likewise.
  * lib/getdelim.c: Likewise.
  * lib/getdtablesize.c: Likewise.
  * lib/gethostname.c: Likewise.
  * lib/getlogin.c: Likewise.
  * lib/getlogin_r.c: Likewise.
  * lib/getopt.c: Likewise.
  * lib/getpagesize.c: Likewise.
  * lib/getpass.c: Likewise.
  * lib/getrusage.c: Likewise.
  * lib/gettimeofday.c: Likewise.
  * lib/glob.c: Likewise.
  * lib/inttypes.in.h: Likewise.
  * lib/isapipe.c: Likewise.
  * lib/javaexec.c: Likewise.
  * lib/link.c: Likewise.
  * lib/localcharset.c: Likewise.
  * lib/localename.h: Likewise.
  * lib/localename.c: Likewise.
  * lib/localtime.c: Likewise.
  * lib/lseek.c: Likewise.
  * lib/mbsinit.c: Likewise.
  * lib/mkdir.c: Likewise.
  * lib/msvc-nothrow.h: Likewise.
  * lib/nanosleep.c: Likewise.
  * lib/nl_langinfo.c: Likewise.
  * lib/nonblocking.c: Likewise.
  * lib/nproc.c: Likewise.
  * lib/open.c: Likewise.
  * lib/openpty.c: Likewise.
  * lib/pathmax.h: Likewise.
  * lib/pipe-filter-aux.c: Likewise.
  * lib/pipe-filter-gi.c: Likewise.
  * lib/pipe-filter-ii.c: Likewise.
  * lib/pipe.c: Likewise.
  * lib/pipe2.c: Likewise.
  * lib/poll.c: Likewise.
  * lib/popen.c: Likewise.
  * lib/posix_openpt.c: Likewise.
  * lib/printf-parse.c: Likewise.
  * lib/progreloc.c: Likewise.
  * lib/putenv.c: Likewise.
  * lib/read.c: Likewise.
  * lib/relocatable.c: Likewise.
  * lib/rename.c: Likewise.
  * lib/same-inode.h: Likewise.
  * lib/secure_getenv.c: Likewise.
  * lib/select.c: Likewise.
  * lib/sethostname.c: Likewise.
  * lib/setlocale.c: Likewise.
  * lib/sigaction.c: Likewise.
  * lib/sigprocmask.c: Likewise.
  * lib/sleep.c: Likewise.
  * lib/spawn-pipe.h: Likewise.
  * lib/spawn-pipe.c: Likewise.
  * lib/spawni.c: Likewise.
  * lib/stat-time.h: Likewise.
  * lib/stat-w32.c: Likewise.
  * lib/stat.c: Likewise.
  * lib/stdio.in.h: Likewise.
  * lib/stdio-impl.h: Likewise.
  * lib/stdio-read.c: Likewise.
  * lib/stdio-write.c: Likewise.
  * lib/stdlib.in.h: Likewise.
  * lib/strerror_r.c: Likewise.
  * lib/strftime-fixes.c: Likewise.
  * lib/sys_stat.in.h: Likewise.
  * lib/sys_types.in.h: Likewise.
  * lib/sys_wait.in.h : Likewise.
  * lib/system-quote.h: Likewise.
  * lib/system-quote.c: Likewise.
  * lib/tmpdir.c: Likewise.
  * lib/tzset.c: Likewise.
  * lib/uname.c: Likewise.
  * lib/unistd.in.h: Likewise.
  * lib/utime.in.h: Likewise.
  * lib/utime.c: Likewise.
  * lib/utimecmp.c: Likewise.
  * lib/utimens.c: Likewise.
  * lib/vasnprintf.c: Likewise.
  * lib/vma-iter.h: Likewise.
  * lib/vma-iter.c: Likewise.
  * lib/wait-process.c: Likewise.
  * lib/wcsftime.c: Likewise.
  * lib/wctype.in.h: Likewise.
  * lib/write.c: Likewise.
  * tests/nap.h: Likewise.
  * tests/test-cloexec.c: Likewise.
  * tests/test-dup-safer.c: Likewise.
  * tests/test-dup2.c: Likewise.
  * tests/test-dup3.c: Likewise.
  * tests/test-fcntl.c: Likewise.
  * tests/test-get-rusage-data.c: Likewise.
  * tests/test-getaddrinfo.c: Likewise.
  * tests/test-getlogin.h: Likewise.
  * tests/test-isatty.c: Likewise.
  * tests/test-localename.c: Likewise.
  * tests/test-mbrtowc-w32.c: Likewise.
  * tests/test-nonblocking.c: Likewise.
  * tests/test-nonblocking-pipe-main.c: Likewise.
  * tests/test-nonblocking-socket-main.c: Likewise.
  * tests/test-nonblocking-socket.h: Likewise.
  * tests/test-pipe.c: Likewise.
  * tests/test-pipe2.c: Likewise.
  * tests/test-poll.c: Likewise.
  * tests/test-pthread_sigmask1.c: Likewise.
  * tests/test-select.h: Likewise.
  * tests/test-sethostname2.c: Likewise.
  * tests/test-sigprocmask.c: Likewise.
  * tests/test-spawn-pipe-child.c: Likewise.
  * tests/test-stat-time.c: Likewise.
  * tests/test-system-quote-main.c: Likewise.
  * tests/test-utimens-common.h: Likewise.
  * tests/test-wcrtomb-w32.c: Likewise.
  * m4/csharpexec.m4 (gt_CSHARPEXEC): Likewise.
  * m4/getcwd.m4 (gl_FUNC_GETCWD_NULL): Likewise.
  * m4/javacomp.m4 (gt_JAVACOMP): Likewise.
  * m4/javaexec.m4 (gt_JAVAEXEC): Likewise.
  * m4/locale-ar.m4 (gt_LOCALE_AR): Likewise.
  * m4/locale-fr.m4 (gt_LOCALE_FR, gt_LOCALE_FR_UTF8): Likewise.
  * m4/locale-ja.m4 (gt_LOCALE_JA): Likewise.
  * m4/locale-tr.m4 (gt_LOCALE_TR_UTF8): Likewise.
  * m4/locale-zh.m4 (gt_LOCALE_ZH_CN): Likewise.
  * m4/malloc.m4 (gl_CHECK_MALLOC_POSIX): Likewise.
  * m4/nocrash.m4 (GL_NOCRASH): Likewise.
  * m4/pathmax.m4 (gl_PATHMAX_SNIPPET): Likewise.
  * m4/ptsname_r.m4 (gl_PREREQ_PTSNAME_R): Likewise.
  * m4/stdio_h.m4 (gl_STDIO_H): Likewise.
  * m4/tmpfile.m4 (gl_FUNC_TMPFILE): Likewise.
  * m4/unistd_h.m4 (gl_UNISTD_H): Likewise.
  

Download

• lib/findprog.c

• /* Locating a program in PATH.
     Copyright (C) 2001-2004, 2006-2018 Free Software Foundation, Inc.
     Written by Bruno Haible <haible@clisp.cons.org>, 2001.
  
     This program is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
     the Free Software Foundation; either version 3 of the License, 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.
  
     You should have received a copy of the GNU General Public License
     along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  
  
  #include <config.h>
  
  /* Specification.  */
  #include "findprog.h"
  
  #include <stdbool.h>
  #include <stdlib.h>
  #include <string.h>
  #include <unistd.h>
  
  /* Avoid collision between findprog.c and findprog-lgpl.c.  */
  #if IN_FINDPROG_LGPL || ! GNULIB_FINDPROG_LGPL
  
  #if !IN_FINDPROG_LGPL
  # include "xalloc.h"
  #endif
  #include "concat-filename.h"
  
  
  const char *
  find_in_path (const char *progname)
  {
  #if defined _WIN32 || defined __CYGWIN__ || defined __EMX__ || defined __DJGPP__
    /* Native Windows, Cygwin, OS/2, DOS */
    /* The searching rules with .COM, .EXE, .BAT, .CMD etc. suffixes are
       too complicated.  Leave it to the OS.  */
    return progname;
  #else
    /* Unix */
    char *path;
    char *path_rest;
    char *cp;
  
    if (strchr (progname, '/') != NULL)
      /* If progname contains a slash, it is either absolute or relative to
         the current directory.  PATH is not used.  */
      return progname;
  
    path = getenv ("PATH");
    if (path == NULL || *path == '\0')
      /* If PATH is not set, the default search path is implementation
         dependent.  */
      return progname;
  
    /* Make a copy, to prepare for destructive modifications.  */
  # if !IN_FINDPROG_LGPL
    path = xstrdup (path);
  # else
    path = strdup (path);
    if (path == NULL)
      /* Out of memory.  */
      return progname;
  # endif
    for (path_rest = path; ; path_rest = cp + 1)
      {
        const char *dir;
        bool last;
        char *progpathname;
  
        /* Extract next directory in PATH.  */
        dir = path_rest;
        for (cp = path_rest; *cp != '\0' && *cp != ':'; cp++)
          ;
        last = (*cp == '\0');
        *cp = '\0';
  
        /* Empty PATH components designate the current directory.  */
        if (dir == cp)
          dir = ".";
  
        /* Concatenate dir and progname.  */
  # if !IN_FINDPROG_LGPL
        progpathname = xconcatenated_filename (dir, progname, NULL);
  # else
        progpathname = concatenated_filename (dir, progname, NULL);
        if (progpathname == NULL)
          {
            /* Out of memory.  */
            free (path);
            return progname;
          }
  # endif
  
        /* On systems which have the eaccess() system call, let's use it.
           On other systems, let's hope that this program is not installed
           setuid or setgid, so that it is ok to call access() despite its
           design flaw.  */
        if (eaccess (progpathname, X_OK) == 0)
          {
            /* Found!  */
            if (strcmp (progpathname, progname) == 0)
              {
                free (progpathname);
  
                /* Add the "./" prefix for real, that xconcatenated_filename()
                   optimized away.  This avoids a second PATH search when the
                   caller uses execlp/execvp.  */
                progpathname = XNMALLOC (2 + strlen (progname) + 1, char);
                progpathname[0] = '.';
                progpathname[1] = '/';
                memcpy (progpathname + 2, progname, strlen (progname) + 1);
              }
  
            free (path);
            return progpathname;
          }
  
        free (progpathname);
  
        if (last)
          break;
      }
  
    /* Not found in PATH.  An error will be signalled at the first call.  */
    free (path);
    return progname;
  #endif
  }
  
  #endif
  

Download