home *** CD-ROM | disk | FTP | other *** search
- /*
- HTTrack external callbacks example : print all downloaded html documents
-
- How to build: (callback.so or callback.dll)
- With GNU-GCC:
- gcc -O -g3 -Wall -D_REENTRANT -shared -o mycallback.so callbacks-example.c -lhttrack1
- With MS-Visual C++:
- cl -LD -nologo -W3 -Zi -Zp4 -DWIN32 -Fe"mycallback.dll" callbacks-example.c libhttrack1.lib
-
- Note: the httrack library linker option is only necessary when using libhttrack's functions inside the callback
-
- How to use:
- httrack --wrapper mycallback ..
- */
-
- /* system includes */
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
-
- /* standard httrack module includes */
- #include "httrack-library.h"
- #include "htsopt.h"
- #include "htsdefines.h"
-
- /* local function called as "check_html" callback */
- static int process_file(t_hts_callbackarg /*the carg structure, holding various information*/*carg, /*the option settings*/httrackp *opt,
- /*other parameters are callback-specific*/
- char* html, int len, const char* url_address, const char* url_file) {
- void *ourDummyArg = (void*) CALLBACKARG_USERDEF(carg); /*optional user-defined arg*/
-
- /* call parent functions if multiple callbacks are chained. you can skip this part, if you don't want previous callbacks to be called. */
- if (CALLBACKARG_PREV_FUN(carg, check_html) != NULL) {
- if (!CALLBACKARG_PREV_FUN(carg, check_html)(CALLBACKARG_PREV_CARG(carg), opt,
- html, len, url_address, url_file)) {
- return 0; /* abort */
- }
- }
-
- printf("file %s%s content: %s\n", url_address, url_file, html);
- return 1; /* success */
- }
-
- /* local function called as "end" callback */
- static int end_of_mirror(t_hts_callbackarg /*the carg structure, holding various information*/*carg, /*the option settings*/httrackp *opt) {
- void *ourDummyArg = (void*) CALLBACKARG_USERDEF(carg); /*optional user-defined arg*/
-
- /* processing */
- fprintf(stderr, "That's all, folks!\n");
-
- /* call parent functions if multiple callbacks are chained. you can skip this part, if you don't want previous callbacks to be called. */
- if (CALLBACKARG_PREV_FUN(carg, end) != NULL) {
- /* status is ok on our side, return other callabck's status */
- return CALLBACKARG_PREV_FUN(carg, end)(CALLBACKARG_PREV_CARG(carg), opt);
- }
-
- return 1; /* success */
- }
-
- /*
- module entry point
- the function name and prototype MUST match this prototype
- */
- EXTERNAL_FUNCTION int hts_plug(httrackp *opt, const char* argv) {
- /* optional argument passed in the commandline we won't be using here */
- const char *arg = strchr(argv, ',');
- if (arg != NULL)
- arg++;
-
- /* plug callback functions */
- CHAIN_FUNCTION(opt, check_html, process_file, /*optional user-defined arg*/NULL);
- CHAIN_FUNCTION(opt, end, end_of_mirror, /*optional user-defined arg*/NULL);
-
- return 1; /* success */
- }
-
- /*
- module exit point
- the function name and prototype MUST match this prototype
- */
- EXTERNAL_FUNCTION int hts_unplug(httrackp *opt) {
- fprintf(stderr, "Module unplugged");
-
- return 1; /* success */
- }
-