mirror of https://github.com/moparisthebest/curl
154 lines
3.1 KiB
C
154 lines
3.1 KiB
C
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#include <stdio.h>
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#include <ctype.h>
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#include <string.h>
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#include <stdlib.h>
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#define EAT_SPACE(ptr) while( ptr && *ptr && isspace(*ptr) ) ptr++
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#define EAT_WORD(ptr) while( ptr && *ptr && !isspace(*ptr) && ('>' != *ptr)) ptr++
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#ifdef DEBUG
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#define show(x) printf x
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#else
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#define show(x)
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#endif
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static
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char *appendstring(char *string, /* original string */
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char *buffer, /* to append */
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int *stringlen, int *stralloc)
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{
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int len = strlen(buffer);
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if((len + *stringlen) > *stralloc) {
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char *newptr= realloc(string, *stralloc*2);
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if(newptr) {
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string = newptr;
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*stralloc *= 2;
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}
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else
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return NULL;
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}
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strcpy(&string[*stringlen], buffer);
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*stringlen += len;
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return string;
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}
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char *spitout(FILE *stream, char *main, char *sub, int *size)
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{
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char buffer[8192]; /* big enough for anything */
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char cmain[128]=""; /* current main section */
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char csub[128]=""; /* current sub section */
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char *ptr;
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char *end;
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char display = 0;
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char *string;
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int stringlen=0;
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int stralloc=256;
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enum {
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STATE_OUTSIDE,
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STATE_INMAIN,
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STATE_INSUB,
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STATE_ILLEGAL
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} state = STATE_OUTSIDE;
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string = (char *)malloc(stralloc);
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while(fgets(buffer, sizeof(buffer), stream)) {
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ptr = buffer;
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/* pass white spaces */
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EAT_SPACE(ptr);
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if('<' != *ptr) {
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if(display) {
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show(("=> %s", buffer));
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string = appendstring(string, buffer, &stringlen, &stralloc);
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show(("* %s\n", buffer));
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}
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continue;
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}
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ptr++;
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EAT_SPACE(ptr);
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if('/' == *ptr) {
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/* end of a section */
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ptr++;
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EAT_SPACE(ptr);
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end = ptr;
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EAT_WORD(end);
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*end = 0;
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if((state == STATE_INSUB) &&
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!strcmp(csub, ptr)) {
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/* this is the end of the currently read sub section */
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state--;
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csub[0]=0; /* no sub anymore */
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display=0;
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}
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else if((state == STATE_INMAIN) &&
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!strcmp(cmain, ptr)) {
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/* this is the end of the currently read main section */
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state--;
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cmain[0]=0; /* no main anymore */
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display=0;
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}
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}
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else if(!display) {
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/* this is the beginning of a section */
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end = ptr;
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EAT_WORD(end);
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*end = 0;
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switch(state) {
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case STATE_OUTSIDE:
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strcpy(cmain, ptr);
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state = STATE_INMAIN;
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break;
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case STATE_INMAIN:
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strcpy(csub, ptr);
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state = STATE_INSUB;
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break;
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}
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}
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if(display) {
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string = appendstring(string, buffer, &stringlen, &stralloc);
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show(("* %s\n", buffer));
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}
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if((STATE_INSUB == state) &&
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!strcmp(cmain, main) &&
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!strcmp(csub, sub)) {
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show(("* (%d bytes) %s\n", stringlen, buffer));
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display = 1; /* start displaying */
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}
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else {
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show(("%d (%s/%s): %s\n", state, cmain, csub, buffer));
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display = 0; /* no display */
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}
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}
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*size = stringlen;
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return string;
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}
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#ifdef TEST
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int main(int argc, char **argv)
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{
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if(argc< 3) {
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printf("./moo main sub\n");
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}
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else {
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int size;
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char *buffer = spitout(stdin, argv[1], argv[2], &size);
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}
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return 0;
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}
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#endif
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