forked from osmocom/wireshark
158 lines
4.3 KiB
C
158 lines
4.3 KiB
C
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/* make-dissectors.c
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* Tool to build the dissector registration arrays.
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <glib.h>
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#define ARRAY_RESERVED_SIZE 2048
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GRegex *protos_regex, *handoffs_regex;
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static int
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compare_symbols(gconstpointer a, gconstpointer b)
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{
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return g_strcmp0(*(const char **)a, *(const char **)b);
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}
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static void
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scan_matches(GRegex *regex, const char *string, GPtrArray *dst)
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{
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GMatchInfo *match_info;
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char *match;
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g_regex_match(regex, string, G_REGEX_MATCH_NOTEMPTY, &match_info);
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while (g_match_info_matches(match_info)) {
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match = g_match_info_fetch(match_info, 1);
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g_ptr_array_add(dst, match);
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g_match_info_next(match_info, NULL);
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}
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g_match_info_free(match_info);
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}
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static void
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scan_file(const char *file, GPtrArray *protos, GPtrArray *handoffs)
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{
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char *contents;
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if (!g_file_get_contents(file, &contents, NULL, NULL))
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return;
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scan_matches(protos_regex, contents, protos);
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scan_matches(handoffs_regex, contents, handoffs);
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g_free(contents);
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}
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static void
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scan_list(const char *list, GPtrArray *protos, GPtrArray *handoffs)
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{
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char *contents, *arg;
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if (!g_file_get_contents(list, &contents, NULL, NULL))
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return;
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for (arg = strtok(contents, " \n"); arg != NULL; arg = strtok(NULL, " \n")) {
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scan_file(arg, protos, handoffs);
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}
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g_free(contents);
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}
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int main(int argc, char **argv)
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{
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GPtrArray *protos = NULL, *handoffs = NULL;
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GError *err = NULL;
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guint i;
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protos = g_ptr_array_new_full(ARRAY_RESERVED_SIZE, g_free);
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handoffs = g_ptr_array_new_full(ARRAY_RESERVED_SIZE, g_free);
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protos_regex = g_regex_new("void\\s+(proto_register_[[:alnum:]_]+)\\s*\\(\\s*void\\s*\\)\\s*{",
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G_REGEX_OPTIMIZE, G_REGEX_MATCH_NOTEMPTY, &err);
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if (err) {
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fprintf(stderr, "GRegex: %s\n", err->message);
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exit(1);
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}
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handoffs_regex = g_regex_new("void\\s+(proto_reg_handoff_[[:alnum:]_]+)\\s*\\(\\s*void\\s*\\)\\s*{",
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G_REGEX_OPTIMIZE, G_REGEX_MATCH_NOTEMPTY, &err);
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if (err) {
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fprintf(stderr, "GRegex: %s\n", err->message);
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exit(1);
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}
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for (int arg = 1; arg < argc; arg++) {
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if (argv[arg][0] == '@') {
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scan_list(&argv[arg][1], protos, handoffs);
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}
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else {
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scan_file(argv[arg], protos, handoffs);
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}
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}
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g_ptr_array_sort(protos, compare_symbols);
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g_ptr_array_sort(handoffs, compare_symbols);
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printf("/*\n"
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" * Do not modify this file. Changes will be overwritten.\n"
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" *\n"
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" * Generated automatically by the \"dissectors.c\" target using\n"
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" * \"make-dissectors\".\n"
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" */\n"
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"\n"
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"#include <ws_symbol_export.h>\n"
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"#include <dissectors.h>\n"
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"\n");
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printf("const gulong dissector_reg_proto_count = %d;\n"
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"const gulong dissector_reg_handoff_count = %d;\n"
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"\n",
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protos->len, handoffs->len);
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for (i = 0; i < protos->len; i++) {
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printf("void %s(void);\n", (char *)protos->pdata[i]);
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}
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printf("\n"
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"dissector_reg_t dissector_reg_proto[] = {\n");
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for (i = 0; i < protos->len; i++) {
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printf(" { \"%s\", %s },\n", (char *)protos->pdata[i], (char *)protos->pdata[i]);
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}
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printf(" { NULL, NULL }\n"
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"};\n"
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"\n");
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for (i = 0; i < handoffs->len; i++) {
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printf("void %s(void);\n", (char *)handoffs->pdata[i]);
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}
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printf("\n"
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"dissector_reg_t dissector_reg_handoff[] = {\n");
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for (i = 0; i < handoffs->len; i++) {
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printf(" { \"%s\", %s },\n", (char *)handoffs->pdata[i], (char *)handoffs->pdata[i]);
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}
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printf(" { NULL, NULL }\n"
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"};\n");
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g_regex_unref(protos_regex);
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g_regex_unref(handoffs_regex);
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g_ptr_array_free(protos, TRUE);
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g_ptr_array_free(handoffs, TRUE);
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}
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/*
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* Editor modelines
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*
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* Local Variables:
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* c-basic-offset: 4
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* tab-width: 8
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* indent-tabs-mode: nil
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* End:
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*
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* ex: set shiftwidth=4 tabstop=8 expandtab:
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* :indentSize=4:tabSize=8:noTabs=true:
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*/
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