diff options
Diffstat (limited to 'iconv/gconv_conf.c')
| -rw-r--r-- | iconv/gconv_conf.c | 158 |
1 files changed, 87 insertions, 71 deletions
diff --git a/iconv/gconv_conf.c b/iconv/gconv_conf.c index d3c13d75c9..8a72c7aac9 100644 --- a/iconv/gconv_conf.c +++ b/iconv/gconv_conf.c @@ -19,6 +19,7 @@ Boston, MA 02111-1307, USA. */ #include <ctype.h> +#include <errno.h> #include <gconv.h> #include <search.h> #include <stdio.h> @@ -35,6 +36,12 @@ static const char default_gconv_path[] = GCONV_PATH; along the path. */ static const char gconv_conf_filename[] = "gconv-modules"; +/* Filename extension for the modules. */ +#ifndef MODULE_EXT +# define MODULE_EXT ".so" +#endif +static const char gconv_module_ext[] = MODULE_EXT; + /* We have a few builtin transformations. */ static struct gconv_module builtin_modules[] = { @@ -111,15 +118,18 @@ add_alias (char *rp) new_alias = (struct gconv_alias *) malloc (sizeof (struct gconv_alias) + (wp - from)); - new_alias->fromname = memcpy ((char *) new_alias - + sizeof (struct gconv_alias), - from, to - from); - new_alias->toname = memcpy ((char *) new_alias + sizeof (struct gconv_alias) - + (to - from), to, wp - to); - - if (__tsearch (new_alias, &__gconv_alias_db, __gconv_alias_compare) == NULL) - /* Something went wrong, free this entry. */ - free (new_alias); + if (new_alias != NULL) + { + new_alias->fromname = memcpy ((char *) new_alias + + sizeof (struct gconv_alias), + from, wp - from); + new_alias->toname = new_alias->fromname + (to - from); + + if (__tsearch (new_alias, &__gconv_alias_db, __gconv_alias_compare) + == NULL) + /* Something went wrong, free this entry. */ + free (new_alias); + } } @@ -138,6 +148,7 @@ add_module (char *rp, const char *directory, size_t dir_len, void **modules, char *from, *to, *module, *wp; size_t const_len; int from_is_regex; + int need_ext; int cost; while (isspace (*rp)) @@ -195,65 +206,68 @@ add_module (char *rp, const char *directory, size_t dir_len, void **modules, /* Increment by one for the slash. */ ++dir_len; + /* See whether we must add the ending. */ + need_ext = 0; + if (wp - module < sizeof (gconv_module_ext) + || memcmp (wp - sizeof (gconv_module_ext), gconv_module_ext, + sizeof (gconv_module_ext)) != 0) + /* We must add the module extension. */ + need_ext = sizeof (gconv_module_ext) - 1; + /* We've collected all the information, now create an entry. */ - const_len = 0; if (from_is_regex) - do - ++const_len; - while (isalnum (from[const_len]) || from[const_len] == '-' - || from[const_len] == '/' || from[const_len] == '.' - || from[const_len] == '_'); + { + const_len = 0; + while (isalnum (from[const_len]) || from[const_len] == '-' + || from[const_len] == '/' || from[const_len] == '.' + || from[const_len] == '_') + ++const_len; + } + else + const_len = to - from - 1; new_module = (struct gconv_module *) malloc (sizeof (struct gconv_module) - + (wp - from) + const_len - + dir_len); + + (wp - from) + + dir_len + need_ext); if (new_module != NULL) { + char *tmp; + + new_module->from_constpfx = memcpy ((char *) new_module + + sizeof (struct gconv_module), + from, to - from); if (from_is_regex) - { - new_module->from_pattern = memcpy ((char *) new_module - + sizeof (struct gconv_module), - from, to - from); - new_module->from_constpfx = memcpy ((char *) new_module->from_pattern - + (to - from), - from, const_len); - ((char *) new_module->from_constpfx)[const_len] = '\0'; - new_module->from_constpfx_len = const_len; - ++const_len; - } + new_module->from_pattern = new_module->from_constpfx; else - { - new_module->from_pattern = NULL; - new_module->from_constpfx = memcpy ((char *) new_module - + sizeof (struct gconv_module), - from, to - from); - new_module->from_constpfx_len = to - from - 1; - const_len = to - from; - } + new_module->from_pattern = NULL; + + new_module->from_constpfx_len = const_len; + new_module->from_regex = NULL; new_module->to_string = memcpy ((char *) new_module->from_constpfx - + const_len + 1, to, module - to); + + (to - from), to, module - to); new_module->cost = cost; + new_module->module_name = (char *) new_module->to_string + (module - to); + if (dir_len == 0) - new_module->module_name = memcpy ((char *) new_module->to_string - + (module - to), - module, wp - module); + tmp = (char *) new_module->module_name; else { - char *tmp; - new_module->module_name = ((char *) new_module->to_string - + (module - to)); tmp = __mempcpy ((char *) new_module->module_name, directory, dir_len - 1); *tmp++ = '/'; - memcpy (tmp, module, wp - module); } - if (__tfind (new_module, *modules, module_compare) != NULL) + tmp = __mempcpy (tmp, module, wp - module); + + if (need_ext) + memcpy (tmp - 1, gconv_module_ext, sizeof (gconv_module_ext)); + + if (__tfind (new_module, modules, module_compare) == NULL) if (__tsearch (new_module, modules, module_compare) == NULL) /* Something went wrong while inserting the new module. */ free (new_module); @@ -267,7 +281,7 @@ static void insert_module (const void *nodep, VISIT value, int level) { if (value == preorder || value == leaf) - __gconv_modules_db[__gconv_nmodules++] = (struct gconv_module *) nodep; + __gconv_modules_db[__gconv_nmodules++] = *(struct gconv_module **) nodep; } static void @@ -302,8 +316,6 @@ read_conf_file (const char *filename, const char *directory, size_t dir_len, break; rp = line; - while (isspace (*rp)) - ++rp; /* Terminate the line (excluding comments or newline) by an NUL byte to simplify the following code. */ endp = strchr (rp, '#'); @@ -316,6 +328,9 @@ read_conf_file (const char *filename, const char *directory, size_t dir_len, *endp = '\0'; } + while (isspace (*rp)) + ++rp; + /* If this is an empty line go on with the next one. */ if (rp == endp) continue; @@ -325,10 +340,10 @@ read_conf_file (const char *filename, const char *directory, size_t dir_len, ++rp; if (rp - word == sizeof ("alias") - 1 - && memcpy (word, "alias", sizeof ("alias") - 1) == 0) + && memcmp (word, "alias", sizeof ("alias") - 1) == 0) add_alias (rp); else if (rp - word == sizeof ("module") - 1 - && memcpy (word, "module", sizeof ("module") - 1) == 0) + && memcmp (word, "module", sizeof ("module") - 1) == 0) add_module (rp, directory, dir_len, modules, nmodules); /* else */ /* Otherwise ignore the line. */ @@ -349,6 +364,7 @@ __gconv_read_conf (void) char *gconv_path, *elem; void *modules = NULL; size_t nmodules = 0; + int save_errno = errno; if (user_path == NULL) /* No user-defined path. Make a modifiable copy of the default path. */ @@ -390,31 +406,31 @@ __gconv_read_conf (void) /* If the configuration files do not contain any valid module specification remember this by setting the pointer to the module array to NULL. */ - nmodules = sizeof (builtin_modules) / sizeof (struct gconv_module); + nmodules += sizeof (builtin_modules) / sizeof (builtin_modules[0]); if (nmodules == 0) + __gconv_modules_db = NULL; + else { - __gconv_modules_db = NULL; - return; - } + __gconv_modules_db = + (struct gconv_module **) malloc (nmodules + * sizeof (struct gconv_module)); + if (__gconv_modules_db != NULL) + { + size_t cnt; - __gconv_modules_db = - (struct gconv_module **) malloc (nmodules * sizeof (struct gconv_module)); - if (__gconv_modules_db == NULL) - /* We cannot do anything. */ - return; + /* Insert all module entries into the array. */ + __twalk (modules, insert_module); - /* First insert the builtin transformations. */ - while (__gconv_nmodules < (sizeof (builtin_modules) - / sizeof (struct gconv_module))) - { - __gconv_modules_db[__gconv_nmodules] = - &builtin_modules[__gconv_nmodules]; - ++__gconv_nmodules; - } + /* No remove the tree data structure. */ + __tdestroy (modules, nothing); - /* Insert all module entries into the array. */ - __twalk (modules, insert_module); + /* Finally insert the builtin transformations. */ + for (cnt = 0; cnt < (sizeof (builtin_modules) + / sizeof (struct gconv_module)); ++cnt) + __gconv_modules_db[__gconv_nmodules++] = &builtin_modules[cnt]; + } + } - /* No remove the tree data structure. */ - __tdestroy (modules, nothing); + /* Restore the error number. */ + __set_errno (save_errno); } |