#include "mendex.h"

#include <kpathsea/tex-file.h>

static inline int
bfgetc (FILE *stream)
{
	int cc = getc (stream);
	if (cc == '\r') {
		cc = getc (stream);
		if (cc != '\n') {
			ungetc (cc, stream);
			cc = '\r';
		}
	}
	return cc;
}
#define fgetc bfgetc

/*   checking last page   */
int lastpage(const char *filename)
{
	int i,cc,num= -1;
	char logfile[32],numbuff[16];
	FILE *fp;

	for (i=strlen(filename);i>=0;i--) {
		if (filename[i]=='.') {
			strncpy(logfile,filename,i);
			sprintf(&logfile[i],".log");
			break;
		}
	}
	if (i==-1) sprintf(logfile,"%s.log",filename);

	if(kpse_in_name_ok(logfile))
		fp=fopen(logfile,"r");
	else
		fp=NULL;
	if (fp==NULL) {
		fprintf(stderr,"No log file, %s.\n",logfile);
		exit(255);
	}

	while (1) {
		cc=fgetc(fp);
		if (cc==EOF) break;
		else if (cc=='[') {
			for (i=0;;i++) {
				cc=fgetc(fp);
				if (((i==0)&&(cc=='-'))||((cc>='0')&&(cc<='9'))) numbuff[i]=cc;
				else {
					numbuff[i]='\0';
					break;
				}
			}
			if (strlen(numbuff)>0) num=atoi(numbuff);
		}
	}

	fclose(fp);

	return num;
}