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Viewing changes to dttools/src/envtools.c

  • Committer: Bazaar Package Importer
  • Author(s): Michael Hanke
  • Date: 2011-05-07 09:05:00 UTC
  • Revision ID: james.westby@ubuntu.com-20110507090500-lqpmdtwndor6e7os
Tags: upstream-3.3.2
Import upstream version 3.3.2

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dttools/src/envtools.c
 
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/*
 
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Copyright (C) 2010- The University of Notre Dame
 
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This software is distributed under the GNU General Public License.
 
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See the file COPYING for details.
 
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*/
 
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#include "xmalloc.h"
 
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#include <stdio.h>
 
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#include <stdlib.h>
 
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#include <string.h>
 
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#include <sys/stat.h>
 
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#include <sys/types.h>
 
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#include <unistd.h>
 
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int find_executable(const char *exe_name, const char *env_path_var, char *exe_path, int max_length)
 
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{       
 
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    char *env_paths;
 
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    char *cur_path;
 
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    if(access(exe_name,R_OK|X_OK)==0) {
 
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        snprintf(exe_path,max_length,"%s",exe_name);
 
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        return 1;
 
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    }
 
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    if (!getenv(env_path_var)) return 0;
 
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    env_paths = xstrdup(getenv(env_path_var));
 
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    for (cur_path = strtok(env_paths, ":"); cur_path; cur_path = strtok(NULL, ":")) {
 
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        snprintf(exe_path, max_length, "%s/%s", cur_path, exe_name);
 
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        if (access(exe_path, R_OK | X_OK) == 0) 
 
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            goto fe_cleanup;
 
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    }
 
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fe_cleanup:
 
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    free(env_paths);
 
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    return cur_path != NULL;
 
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}