diff options
Diffstat (limited to 'iconv/iconv_prog.c')
| -rw-r--r-- | iconv/iconv_prog.c | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/iconv/iconv_prog.c b/iconv/iconv_prog.c index 719f20d45b..6b34d3460b 100644 --- a/iconv/iconv_prog.c +++ b/iconv/iconv_prog.c @@ -19,11 +19,14 @@ Boston, MA 02111-1307, USA. */ #include <argp.h> +#include <ctype.h> #include <errno.h> #include <error.h> #include <fcntl.h> +#include <gconv.h> #include <iconv.h> #include <locale.h> +#include <search.h> #include <stdio.h> #include <stdlib.h> #include <string.h> @@ -41,6 +44,7 @@ static void print_version (FILE *stream, struct argp_state *state); void (*argp_program_version_hook) (FILE *, struct argp_state *) = print_version; #define OPT_VERBOSE 1000 +#define OPT_LIST 1001 /* Definitions of arguments for argp functions. */ static const struct argp_option options[] = @@ -48,6 +52,8 @@ static const struct argp_option options[] = { NULL, 0, NULL, 0, N_("Input/Output format specification:") }, { "from-code", 'f', "NAME", 0, N_("encoding of original text") }, { "to-code", 't', "NAME", 0, N_("encoding for output") }, + { NULL, 0, NULL, 0, N_("Information:") }, + { "list", OPT_LIST, NULL, 0, N_("list all known coded character sets") }, { NULL, 0, NULL, 0, N_("Output control:") }, { "output", 'o', "FILE", 0, N_("output file") }, { "verbose", OPT_VERBOSE, NULL, 0, N_("print progress information") }, @@ -83,11 +89,15 @@ static const char *output_file; /* Nonzero if verbose ouput is wanted. */ static int verbose; +/* Nonzero if list of all coded character sets is wanted. */ +static int list; + /* Prototypes for the functions doing the actual work. */ static int process_block (iconv_t cd, const char *addr, size_t len, FILE *output); static int process_fd (iconv_t cd, int fd, FILE *output); static int process_file (iconv_t cd, FILE *input, FILE *output); +static void print_known_names (void); int @@ -107,6 +117,13 @@ main (int argc, char *argv[]) /* Parse and process arguments. */ argp_parse (&argp, argc, argv, 0, &remaining, NULL); + /* List all coded character sets if wanted. */ + if (list) + { + print_known_names (); + exit (EXIT_SUCCESS); + } + /* If either the from- or to-code is not specified this is an error since we do not know what to do. */ if (from_code == NULL && to_code == NULL) @@ -237,6 +254,9 @@ parse_opt (int key, char *arg, struct argp_state *state) case OPT_VERBOSE: verbose = 1; break; + case OPT_LIST: + list = 1; + break; default: return ARGP_ERR_UNKNOWN; } @@ -412,3 +432,106 @@ process_file (iconv_t cd, FILE *input, FILE *output) we haven't read anything so far. */ return process_fd (cd, fileno (input), output); } + + +/* Print all known character sets/encodings. */ +static void *printlist; +static size_t column; +static int not_first; + +static void +insert_print_list (const void *nodep, VISIT value, int level) +{ + if (value == leaf || value == postorder) + { + const struct gconv_alias *s = *(const struct gconv_alias **) nodep; + tsearch (s->fromname, &printlist, (__compar_fn_t) strcoll); + } +} + +static void +do_print (const void *nodep, VISIT value, int level) +{ + if (value == leaf || value == postorder) + { + const char *s = *(const char **) nodep; + size_t len = strlen (s); + size_t cnt; + + while (len > 0 && s[len - 1] == '/') + --len; + + for (cnt = 0; cnt < len; ++cnt) + if (isalnum (s[cnt])) + break; + if (cnt == len) + return; + + if (not_first) + { + putchar (','); + ++column; + + if (column > 2 && column + len > 77) + { + fputs ("\n ", stdout); + column = 2; + } + else + { + putchar (' '); + ++column; + } + } + else + not_first = 1; + + fwrite (s, len, 1, stdout); + column += len; + } +} + +static void +print_known_names (void) +{ + size_t cnt; + iconv_t h; + + /* We must initialize the internal databases first. */ + h = iconv_open ("L1", "L1"); + iconv_close (h); + + /* First add the aliases. */ + twalk (__gconv_alias_db, insert_print_list); + + /* Add the from- and to-names from the known modules. */ + for (cnt = 0; cnt < __gconv_nmodules; ++cnt) + { + if (__gconv_modules_db[cnt]->from_pattern == NULL) + { + tsearch (__gconv_modules_db[cnt]->from_constpfx, &printlist, + (__compar_fn_t) strcoll); + tsearch (__gconv_modules_db[cnt]->to_string, &printlist, + (__compar_fn_t) strcoll); + } + else + tsearch (__gconv_modules_db[cnt]->from_pattern, &printlist, + (__compar_fn_t) strcoll); + } + + fputs (_("\ +The following list contain all the coded character sets known. This does\n\ +not necessarily mean that all combinations of these names can be used for\n\ +the FROM and TO command line parameters. One coded character set can be\n\ +listed with several different names (aliases).\n\ + Some of the names are no plain strings but instead regular expressions and\n\ +they match a variety of names which can be given as parameters to the\n\ +program.\n\n "), stdout); + + /* Now print the collected names. */ + column = 2; + twalk (printlist, do_print); + + if (column != 0) + puts (""); +} |