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https://github.com/xroche/httrack.git
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97 lines
2.6 KiB
C
97 lines
2.6 KiB
C
/*
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HTTrack external callbacks example : changing the destination filename
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.c file
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How to build: (callback.so or callback.dll)
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With GNU-GCC:
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gcc -O -g3 -Wall -D_REENTRANT -shared -o mycallback.so callbacks-example.c -lhttrack2
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With MS-Visual C++:
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cl -LD -nologo -W3 -Zi -Zp4 -DWIN32 -Fe"mycallback.dll" callbacks-example.c libhttrack.lib
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Note: the httrack library linker option is only necessary when using libhttrack's functions inside the callback
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How to use:
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httrack --wrapper mycallback ..
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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/* Standard httrack module includes */
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#include "httrack-library.h"
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#include "htsopt.h"
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#include "htsdefines.h"
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/* Local function definitions */
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static int mysavename(t_hts_callbackarg * carg, httrackp * opt,
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const char *adr_complete, const char *fil_complete,
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const char *referer_adr, const char *referer_fil,
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char *save);
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/* external functions */
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EXTERNAL_FUNCTION int hts_plug(httrackp * opt, const char *argv);
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/* Options settings */
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#include "htsopt.h"
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/* TOLOWER */
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#define TOLOWER_(a) (a >= 'A' && a <= 'Z') ? (a + ('a' - 'A')) : a
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#define TOLOWER(a) ( TOLOWER_( (a) ) )
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/*
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This sample just changes the destination filenames to ROT-13 equivalent ; that is,
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a -> n
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b -> o
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c -> p
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d -> q
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..
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n -> a
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o -> b
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..
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<parent> -> <link>
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This sample can be improved, for example, to make a map of a website.
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*/
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/*
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module entry point
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*/
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EXTERNAL_FUNCTION int hts_plug(httrackp * opt, const char *argv) {
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const char *arg = strchr(argv, ',');
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if (arg != NULL)
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arg++;
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/* Plug callback functions */
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CHAIN_FUNCTION(opt, savename, mysavename, NULL);
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return 1; /* success */
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}
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static int mysavename(t_hts_callbackarg * carg, httrackp * opt,
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const char *adr_complete, const char *fil_complete,
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const char *referer_adr, const char *referer_fil,
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char *save) {
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char *a;
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/* Call parent functions if multiple callbacks are chained. */
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if (CALLBACKARG_PREV_FUN(carg, savename) != NULL) {
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if (!CALLBACKARG_PREV_FUN(carg, savename)
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(CALLBACKARG_PREV_CARG(carg), opt, adr_complete, fil_complete,
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referer_adr, referer_fil, save)) {
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return 0; /* Abort */
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}
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}
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/* Process */
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for(a = save; *a != 0; a++) {
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char c = TOLOWER(*a);
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if (c >= 'a' && c <= 'z')
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*a = (((c - 'a') + 13) % 26) + 'a'; // ROT-13
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}
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return 1; /* success */
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}
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