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authorRoland McGrath <roland@gnu.org>2004-12-19 23:23:42 +0000
committerRoland McGrath <roland@gnu.org>2004-12-19 23:23:42 +0000
commited2bca567ce6656916b20b3a9a82f784a60c5dca (patch)
treefa1dbe30ec5e770426f52e89ef62625689cfc3d6
parent4f1a039305d3048721a52adda5b39e5af0f7b6fb (diff)
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2004-12-19 Roland McGrath <roland@redhat.com>
* iconv/iconvconfig.c (nostdlib, output_file, output_file_len): New variables. (options, parse_opt, main): Take new options --nostdlib and --output/-o to set them. Under --nostdlib, skip GCONV_PATH dirs. (write_output): If output_file is set, write the output there.
-rw-r--r--iconv/iconvconfig.c67
1 files changed, 48 insertions, 19 deletions
diff --git a/iconv/iconvconfig.c b/iconv/iconvconfig.c
index e21f03e9ed..74240911a2 100644
--- a/iconv/iconvconfig.c
+++ b/iconv/iconvconfig.c
@@ -28,6 +28,7 @@
#include <mcheck.h>
#include <search.h>
#include <stdint.h>
+#include <stdbool.h>
#include <stdio.h>
#include <stdio_ext.h>
#include <stdlib.h>
@@ -121,16 +122,21 @@ static char *more_help (int key, const char *text, void *input);
/* Definitions of arguments for argp functions. */
#define OPT_PREFIX 300
+#define OPT_NOSTDLIB 301
static const struct argp_option options[] =
{
{ "prefix", OPT_PREFIX, "PATH", 0, N_("Prefix used for all file accesses") },
+ { "output", 'o', "FILE", 0, N_("\
+Put output in FILE instead of installed location\
+ (--prefix does not apply to FILE)") },
+ { "nostdlib", OPT_NOSTDLIB, NULL, 0,
+ N_("Do not search standard directories, only those on the command line") },
{ NULL, 0, NULL, 0, NULL }
};
/* Data structure to communicate with argp functions. */
static struct argp argp =
{
-
options, parse_opt, args_doc, doc, NULL, more_help
};
@@ -162,6 +168,14 @@ static const char *prefix = "";
/* Its length. */
static size_t prefix_len;
+/* Directory to place output file in. */
+static const char *output_file;
+/* Its length. */
+static size_t output_file_len;
+
+/* If true, omit the GCONV_PATH directories and require some arguments. */
+static bool nostdlib;
+
/* Search tree of the modules we know. */
static void *modules;
@@ -270,8 +284,6 @@ main (int argc, char *argv[])
{
int remaining;
int status = 0;
- char *path;
- char *tp;
/* Enable memory use testing. */
/* mcheck_pedantic (NULL); */
@@ -286,6 +298,9 @@ main (int argc, char *argv[])
/* Parse and process arguments. */
argp_parse (&argp, argc, argv, 0, &remaining, NULL);
+ if (nostdlib && remaining == argc)
+ error (2, 0, _("Directory arguments required when using --nostdlib"));
+
/* Initialize the string table. */
strtab = strtabinit ();
@@ -293,14 +308,16 @@ main (int argc, char *argv[])
while (remaining < argc)
status |= handle_dir (argv[remaining++]);
- /* In any case also handle the standard directory. */
- path = strdupa (GCONV_PATH);
- tp = strtok (path, ":");
- while (tp != NULL)
+ if (! nostdlib)
{
- status |= handle_dir (tp);
+ /* In any case also handle the standard directory. */
+ char *path = strdupa (GCONV_PATH), *tp = strsep (&path, ":");
+ while (tp != NULL)
+ {
+ status |= handle_dir (tp);
- tp = strtok (NULL, ":");
+ tp = strsep (&path, ":");
+ }
}
/* Add the builtin transformations and aliases without overwriting
@@ -340,6 +357,13 @@ parse_opt (int key, char *arg, struct argp_state *state)
prefix = arg;
prefix_len = strlen (prefix);
break;
+ case 'o':
+ output_file = arg;
+ output_file_len = strlen (output_file);
+ break;
+ case OPT_NOSTDLIB:
+ nostdlib = true;
+ break;
default:
return ARGP_ERR_UNKNOWN;
}
@@ -626,7 +650,6 @@ add_module (char *rp, const char *directory)
static int
handle_dir (const char *dir)
{
- char *infile;
char *cp;
FILE *fp;
char *line = NULL;
@@ -641,7 +664,8 @@ handle_dir (const char *dir)
newp[dirlen] = '\0';
}
- cp = infile = (char *) alloca (prefix_len + dirlen + sizeof "gconv-modules");
+ char infile[prefix_len + dirlen + sizeof "gconv-modules"];
+ cp = infile;
if (dir[0] == '/')
cp = mempcpy (cp, prefix, prefix_len);
strcpy (mempcpy (cp, dir, dirlen), "gconv-modules");
@@ -1006,9 +1030,9 @@ write_output (void)
struct iovec iov[6];
static const gidx_t null_word;
size_t total;
- char tmpfname[prefix_len + sizeof (GCONV_MODULES_CACHE)
+ char finalname[prefix_len + sizeof GCONV_MODULES_CACHE];
+ char tmpfname[(output_file == NULL ? sizeof finalname : output_file_len + 1)
+ strlen (".XXXXXX")];
- char finalname[prefix_len + sizeof (GCONV_MODULES_CACHE)];
/* Function to insert the names. */
auto void
@@ -1036,15 +1060,20 @@ write_output (void)
}
/* Open the output file. */
- assert (GCONV_MODULES_CACHE[0] == '/');
- strcpy (stpcpy (mempcpy (tmpfname, prefix, prefix_len), GCONV_MODULES_CACHE),
- ".XXXXXX");
+ if (output_file == NULL)
+ {
+ assert (GCONV_MODULES_CACHE[0] == '/');
+ strcpy (stpcpy (mempcpy (tmpfname, prefix, prefix_len),
+ GCONV_MODULES_CACHE),
+ ".XXXXXX");
+ strcpy (mempcpy (finalname, prefix, prefix_len), GCONV_MODULES_CACHE);
+ }
+ else
+ strcpy (mempcpy (tmpfname, output_file, output_file_len), ".XXXXXX");
fd = mkstemp (tmpfname);
if (fd == -1)
return 1;
- strcpy (mempcpy (finalname, prefix, prefix_len), GCONV_MODULES_CACHE);
-
/* Create the string table. */
string_table = strtabfinalize (strtab, &string_table_size);
@@ -1197,7 +1226,7 @@ write_output (void)
/* The file was created with mode 0600. Make it world-readable. */
|| fchmod (fd, 0644) != 0
/* Rename the file, possibly replacing an old one. */
- || rename (tmpfname, finalname) != 0)
+ || rename (tmpfname, output_file ?: finalname) != 0)
{
int save_errno = errno;
close (fd);