125 lines
2.5 KiB
C
125 lines
2.5 KiB
C
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/*
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( cd cdrskin ; cc -g -Wall -o unite_html_b_line unite_html_b_line.c )
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*/
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/*
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Specialized converter for the output of man -H,
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which unites lines where the line end is between <b> and </b>.
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Copyright 2015 Thomas Schmitt, <scdbackup@gmx.net>
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Provided under GPL version 2 or later.
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*/
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#ifdef HAVE_CONFIG_H
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#include "../config.h"
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#endif
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#include <unistd.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <ctype.h>
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#include <errno.h>
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int unite_lines(char *buffer, int *b_open, int *b_state, int flag)
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{
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char *cpt;
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int last_was_nl= 0;
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for(cpt= buffer; *cpt != 0; cpt++) {
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if(*b_open) {
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if(*b_state == 0 && *cpt == '<') {
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*b_state= 1;
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} else if(*b_state == 1) {
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if(*cpt == '/')
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*b_state= 2;
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else
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*b_state= 0;
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} else if(*b_state == 2) {
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if(*cpt == 'b' || *cpt == 'B')
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*b_state= 3;
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else
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*b_state= 0;
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} else if(*b_state == 3) {
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if(*cpt == '>')
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*b_open= 0;
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*b_state= 0;
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}
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} else {
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if(*b_state == 0 && *cpt == '<') {
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*b_state= 1;
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} else if(*b_state == 1) {
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if(*cpt == 'b' || *cpt == 'B')
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*b_state= 2;
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else
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*b_state= 0;
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} else if(*b_state == 2) {
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if(*cpt == '>')
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*b_open= 1;
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*b_state= 0;
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}
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}
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last_was_nl= (*cpt == '\n');
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}
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if(*b_open && last_was_nl) {
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/* replace newline */
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*(cpt - 1)= ' ';
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}
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return(1);
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}
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int main(int argc, char **argv)
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{
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FILE *fpin, *fpout;
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char buffer[4096], *respt;
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int ret, b_open= 0, b_state= 0;
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if(argc != 3) {
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fprintf(stderr, "usage: %s input_path output_path\n", argv[0]);
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return(1);
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}
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if(strcmp(argv[1], "-") == 0) {
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fpin= stdin;
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} else {
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fpin= fopen(argv[1], "rb");
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if(fpin == 0) {
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fprintf(stderr, "Error with input file '%s' : %s\n",
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argv[1], strerror(errno));
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return(2);
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}
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}
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if(strcmp(argv[2], "-") == 0) {
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fpout= stdout;
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} else {
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fpout= fopen(argv[2], "wb");
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if(fpout == 0) {
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fprintf(stderr, "Error with output file '%s' : %s\n",
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argv[2], strerror(errno));
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return(3);
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}
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}
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while(1) {
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respt= fgets(buffer, sizeof(buffer), fpin);
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if(respt == NULL)
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break;
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ret= unite_lines(buffer, &b_open, &b_state, 0);
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if(ret <= 0)
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break;
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ret= fputs(buffer, fpout);
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if(ret < 0) {
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fprintf(stderr, "Error writing to output file '%s' : %s\n",
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argv[2], strerror(errno));
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return(4);
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}
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}
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if(fpin != stdin)
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fclose(fpin);
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if(fpout != stdout)
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fclose(stdout);
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return(0);
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}
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