diff options
Diffstat (limited to 'contrib/texinfo/info/tilde.c')
| -rw-r--r-- | contrib/texinfo/info/tilde.c | 252 |
1 files changed, 121 insertions, 131 deletions
diff --git a/contrib/texinfo/info/tilde.c b/contrib/texinfo/info/tilde.c index 191d222..401f7e1 100644 --- a/contrib/texinfo/info/tilde.c +++ b/contrib/texinfo/info/tilde.c @@ -1,10 +1,11 @@ /* tilde.c -- Tilde expansion code (~/foo := $HOME/foo). - $Id: tilde.c,v 1.3 1996/09/29 23:12:30 karl Exp $ + $Id: tilde.c,v 1.9 1998/02/22 23:03:21 karl Exp $ This file is part of GNU Info, a program for reading online documentation stored in Info format. - Copyright (C) 1988, 89, 90, 91, 92, 93, 96 Free Software Foundation, Inc. + Copyright (C) 1988, 89, 90, 91, 92, 93, 96, 98 + Free Software Foundation, Inc. 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 @@ -22,39 +23,29 @@ Written by Brian Fox (bfox@ai.mit.edu). */ -#if defined (__GNUC__) -# define alloca __builtin_alloca -#else /* !__GNUC__ */ -# if defined (_AIX) +/* Indent #pragma so that older Cpp's don't try to parse it. */ +#ifdef _AIX #pragma alloca -# else /* !_AIX */ -# if defined (HAVE_ALLOCA_H) -# include <alloca.h> -# endif /* HAVE_ALLOCA_H */ -# endif /* !AIX */ -#endif /* !__GNUC__ */ - -#if defined (HAVE_STDLIB_H) -#include <stdlib.h> -#endif - -#include "tilde.h" -#include <pwd.h> - -#if defined (HAVE_STRING_H) -#include <string.h> -#endif +#endif /* _AIX */ -#include "clib.h" +/* Include config.h before doing alloca. */ +#include "info.h" -#if !defined (NULL) -# define NULL 0x0 +#ifdef __GNUC__ +# undef alloca +# define alloca __builtin_alloca +#else +# ifdef HAVE_ALLOCA_H +# include <alloca.h> +# else +# ifndef _AIX +char *alloca (); +# endif +# endif #endif #if defined (TEST) || defined (STATIC_MALLOC) static void *xmalloc (), *xrealloc (); -#else -extern void *xmalloc (), *xrealloc (); #endif /* TEST || STATIC_MALLOC */ /* The default value of tilde_additional_prefixes. This is set to @@ -105,16 +96,16 @@ tilde_find_prefix (string, len) if (prefixes) { for (i = 0; i < string_len; i++) - { - for (j = 0; prefixes[j]; j++) - { - if (strncmp (string + i, prefixes[j], strlen (prefixes[j])) == 0) - { - *len = strlen (prefixes[j]) - 1; - return (i + *len); - } - } - } + { + for (j = 0; prefixes[j]; j++) + { + if (strncmp (string + i, prefixes[j], strlen (prefixes[j])) == 0) + { + *len = strlen (prefixes[j]) - 1; + return (i + *len); + } + } + } } return (string_len); } @@ -133,13 +124,13 @@ tilde_find_suffix (string) for (i = 0; i < string_len; i++) { if (string[i] == '/' || !string[i]) - break; + break; for (j = 0; suffixes && suffixes[j]; j++) - { - if (strncmp (string + i, suffixes[j], strlen (suffixes[j])) == 0) - return (i); - } + { + if (strncmp (string + i, suffixes[j], strlen (suffixes[j])) == 0) + return (i); + } } return (i); } @@ -167,7 +158,7 @@ tilde_expand (string) /* Copy the skipped text into the result. */ if ((result_index + start + 1) > result_size) - result = (char *)xrealloc (result, 1 + (result_size += (start + 20))); + result = (char *)xrealloc (result, 1 + (result_size += (start + 20))); strncpy (result + result_index, string, start); result_index += start; @@ -176,12 +167,12 @@ tilde_expand (string) string += start; /* Make END be the index of one after the last character of the - username. */ + username. */ end = tilde_find_suffix (string); /* If both START and END are zero, we are all done. */ if (!start && !end) - break; + break; /* Expand the entire tilde word, and copy it into RESULT. */ tilde_word = (char *)xmalloc (1 + end); @@ -194,7 +185,7 @@ tilde_expand (string) len = strlen (expansion); if ((result_index + len + 1) > result_size) - result = (char *)xrealloc (result, 1 + (result_size += (len + 20))); + result = (char *)xrealloc (result, 1 + (result_size += (len + 20))); strcpy (result + result_index, expansion); result_index += len; @@ -214,88 +205,87 @@ tilde_expand_word (filename) { char *dirname; - dirname = filename ? strdup (filename) : (char *)NULL; + dirname = filename ? xstrdup (filename) : (char *)NULL; if (dirname && *dirname == '~') { char *temp_name; if (!dirname[1] || dirname[1] == '/') - { - /* Prepend $HOME to the rest of the string. */ - extern char *getenv (); - char *temp_home = getenv ("HOME"); - - /* If there is no HOME variable, look up the directory in - the password database. */ - if (!temp_home) - { - struct passwd *entry; - - entry = (struct passwd *) getpwuid (getuid ()); - if (entry) - temp_home = entry->pw_dir; - } - - temp_name = (char *) - alloca (1 + strlen (&dirname[1]) - + (temp_home ? strlen (temp_home) : 0)); - temp_name[0] = '\0'; - if (temp_home) - strcpy (temp_name, temp_home); - strcat (temp_name, &dirname[1]); - free (dirname); - dirname = strdup (temp_name); - } + { + /* Prepend $HOME to the rest of the string. */ + char *temp_home = getenv ("HOME"); + + /* If there is no HOME variable, look up the directory in + the password database. */ + if (!temp_home) + { + struct passwd *entry; + + entry = (struct passwd *) getpwuid (getuid ()); + if (entry) + temp_home = entry->pw_dir; + } + + temp_name = (char *) + alloca (1 + strlen (&dirname[1]) + + (temp_home ? strlen (temp_home) : 0)); + temp_name[0] = '\0'; + if (temp_home) + strcpy (temp_name, temp_home); + strcat (temp_name, &dirname[1]); + free (dirname); + dirname = xstrdup (temp_name); + } else - { - struct passwd *user_entry; - char *username = (char *)alloca (257); - int i, c; - - for (i = 1; c = dirname[i]; i++) - { - if (c == '/') - break; - else - username[i - 1] = c; - } - username[i - 1] = '\0'; - - if (!(user_entry = (struct passwd *) getpwnam (username))) - { - /* If the calling program has a special syntax for - expanding tildes, and we couldn't find a standard - expansion, then let them try. */ - if (tilde_expansion_failure_hook) - { - char *expansion; - - expansion = (*tilde_expansion_failure_hook) (username); - - if (expansion) - { - temp_name = (char *)alloca - (1 + strlen (expansion) + strlen (&dirname[i])); - strcpy (temp_name, expansion); - strcat (temp_name, &dirname[i]); - free (expansion); - goto return_name; - } - } - /* We shouldn't report errors. */ - } - else - { - temp_name = (char *)alloca - (1 + strlen (user_entry->pw_dir) + strlen (&dirname[i])); - strcpy (temp_name, user_entry->pw_dir); - strcat (temp_name, &dirname[i]); - return_name: - free (dirname); - dirname = strdup (temp_name); - } - endpwent (); - } + { + struct passwd *user_entry; + char *username = (char *)alloca (257); + int i, c; + + for (i = 1; (c = dirname[i]); i++) + { + if (c == '/') + break; + else + username[i - 1] = c; + } + username[i - 1] = '\0'; + + if (!(user_entry = (struct passwd *) getpwnam (username))) + { + /* If the calling program has a special syntax for + expanding tildes, and we couldn't find a standard + expansion, then let them try. */ + if (tilde_expansion_failure_hook) + { + char *expansion; + + expansion = (*tilde_expansion_failure_hook) (username); + + if (expansion) + { + temp_name = (char *)alloca + (1 + strlen (expansion) + strlen (&dirname[i])); + strcpy (temp_name, expansion); + strcat (temp_name, &dirname[i]); + free (expansion); + goto return_name; + } + } + /* We shouldn't report errors. */ + } + else + { + temp_name = (char *)alloca + (1 + strlen (user_entry->pw_dir) + strlen (&dirname[i])); + strcpy (temp_name, user_entry->pw_dir); + strcat (temp_name, &dirname[i]); + return_name: + free (dirname); + dirname = xstrdup (temp_name); + } + endpwent (); + } } return (dirname); } @@ -318,15 +308,15 @@ main (argc, argv) fflush (stdout); if (!gets (line)) - strcpy (line, "done"); + strcpy (line, "done"); if ((strcmp (line, "done") == 0) || - (strcmp (line, "quit") == 0) || - (strcmp (line, "exit") == 0)) - { - done = 1; - break; - } + (strcmp (line, "quit") == 0) || + (strcmp (line, "exit") == 0)) + { + done = 1; + break; + } result = tilde_expand (line); printf (" --> %s\n", result); @@ -369,7 +359,7 @@ xrealloc (pointer, bytes) static void memory_error_and_abort () { - fprintf (stderr, "readline: Out of virtual memory!\n"); + fprintf (stderr, _("readline: Out of virtual memory!\n")); abort (); } #endif /* TEST */ |
