gnu/help2man/bindtextdomain.c

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• Hash : 1288ab11
  Author : Thomas de Grivel
  Date : 2023-01-21T15:08:39
  

  help2man-1.37.1

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• bindtextdomain.c

• /*
   * Nasty preload hack to allow message catalogs to be read from the build tree.
   *
   * export LD_PRELOAD=/usr/lib/help2man/bindtextdomain.so
   * export TEXTDOMAIN=program
   * export LOCALEDIR=${DESTDIR}/usr/share/locale
   */
  
  #define _GNU_SOURCE
  
  #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  #include <dlfcn.h>
  
  #define PRELOAD "bindtextdomain.so"
  
  static void die(char const *msg)
  {
      fprintf(stderr, PRELOAD ": %s\n", msg);
      exit(1);
  }
  
  static char *e_textdomain = 0;
  static char *e_localedir = 0;
  static char *(*r_textdomain)(char const *) = 0;
  static char *(*r_bindtextdomain)(char const *, char const *) = 0;
  static char *(*r_bind_textdomain_codeset)(char const *, char const *) = 0;
  
  void setup()
  {
      static int done = 0;
      if (done++)
          return;
  
      if (!(e_textdomain = getenv("TEXTDOMAIN")))
  	die("TEXTDOMAIN not set");
  
      if (!(e_localedir = getenv("LOCALEDIR")))
  	die("LOCALEDIR not set");
  
      if (!(r_textdomain = dlsym(RTLD_NEXT, "textdomain")))
  	die("can't find symbol \"textdomain\"");
  
      if (!(r_bindtextdomain = dlsym(RTLD_NEXT, "bindtextdomain")))
  	die("can't find symbol \"bindtextdomain\"");
  
      if (!(r_bind_textdomain_codeset = dlsym(RTLD_NEXT,
      					    "bind_textdomain_codeset")))
  	die("can't find symbol \"bind_textdomain_codeset\"");
  }
  
  char *textdomain(char const *domainname)
  {
      char *r;
      setup();
      r = r_textdomain(domainname);
      if (domainname && !strcmp(domainname, e_textdomain))
          r_bindtextdomain(domainname, e_localedir);
  
      return r;
  }
  
  char *bindtextdomain(char const *domainname, char const *dirname)
  {
      char const *dir = dirname;
      setup();
      if (domainname && !strcmp(domainname, e_textdomain))
          dir = e_localedir;
  
      return r_bindtextdomain(domainname, dir);
  }
  
  char *bind_textdomain_codeset(char const *domainname, char const *codeset)
  {
      char *r;
      setup();
      r = r_bind_textdomain_codeset(domainname, codeset);
      if (domainname && !strcmp(domainname, e_textdomain))
          r_bindtextdomain(domainname, e_localedir);
  
      return r;
  }
  

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