csope/src/refsfound.c

#include "global.h"
/* Possibly rename */

struct FILE;

/* Page cursor stack */
static FILE** hto_page = &refsfound;
#define PCS_MAXPAGE 16
static long PCS_pos[PCS_MAXPAGE] = {0};
static int PCS_top = 0;

long seekpage(size_t i){
	if(i > PCS_MAXPAGE-1){ return -1; }

	fseek(*hto_page, PCS_pos[PCS_top], SEEK_SET);

	size_t lc = 0;
	while(PCS_top < i){
		const char c = getc(*hto_page);
		if(c == '\n'){ ++lc; }
		if(c == EOF){ return -1; }
		if(lc == mdisprefs){
			PCS_pos[++PCS_top] = ftell(*hto_page);
		}
	}
	return PCS_pos[PCS_top];
}

long seekrelline(unsigned i){
	seekpage(current_page);
	size_t lc = 0;
	while(lc < i){
		const char c = getc(*hto_page);
		assert(("seekrelline() tried to read past the reference file", !(c == EOF)));
		if(c == '\n'){ ++lc; }
	}
	return ftell(*hto_page);
}

void PCS_reset(void){
	PCS_top = 0;
}

///* position references found file at specified line */
//void
//seekline(unsigned int line)
//{
//    /* verify that there is a references found file */
//    if (refsfound == NULL) {
//        return;
//    }
//    /* go to the beginning of the file */
//    rewind(refsfound);
//	/**/
//	seekrelline(line);
//}
//
///* XXX: this is just dodging the problem */
//void
//seekrelline(unsigned int line){
//    int    c;
//
//    /* verify that there is a references found file */
//    if (refsfound == NULL) {
//        return;
//    }
//
//    /* find the requested line */
//    nextline = 1;
//    while (nextline < line && (c = getc(refsfound)) != EOF) {
//        if (c == '\n') {
//            nextline++;
//        }
//    }
//}