/*
 *	splithub.c
 *
 *	Split a Hub file into two component files:
 *	- a Ref file containing Hub markup and entity references
 *	to localizable strings;
 *	- an Ent file containing the localizable strings as entities;
 *	Version 1, release 4 - May 1997
 *
 *	Designed and written by Laurent Sabarthez
 *	at I&G Com (Boulogne, France).
 *
 *	This software has been put in the public domain by
 *	I&G Com, as a contribution to the Open Tag initiative.
 *
 *	I&G Com does not provide any type of support or
 *	liability for this software. Use it at your own risks.
 *
 *	Bug reports should be sent to:
 *
 *		<vlaures@igcom.fr>
 *
 *
 */

#include <stdio.h>
#include <string.h>

int	split(FILE *hub, FILE *ref, FILE *ent) {
	int	c, k, s;

	s = 0;
	c = 1;
	while ((k = fgetc(hub)) != EOF) {
		switch (s) {
			case 0:
				switch (k) {
					case '<':
						fputc(k, ref);
						s = 1;
						break;
					case '\n':
						s = 0;
						break;
					default:
						fputc('\n', ref);
						fprintf(ref, "&ENT-%06d;\n", c);
						fprintf(ent, "<!ENTITY ENT-%06d \"", c++);
						fputc(k, ent);
						s = 2;
						break;
				}
				break;
			case 1:
				switch (k) {
					case '>':
						fputc(k, ref);
						s = 0;
						break;
					case '\n':
						s = 1;
						break;
					default:
						fputc(k, ref);
						s = 1;
						break;
				}
				break;
			case 2:
				switch (k) {
					case '<':
						fputc(k, ref);
						fprintf(ent, "\">\n");
						s = 1;
						break;
					case '\n':
						s = 2;
						break;
					default:
						fputc(k, ent);
						s = 2;
						break;
				}
				break;
			default:
				fprintf(stderr, "Krtojofr??\n");
				return -1;
		}
	}
	return 0;
}

int	main(int argc, char **argv) {
	FILE	*hub;
	FILE	*ref;
	FILE	*ent;
	char	hubFilename[FILENAME_MAX];
	char	refFilename[FILENAME_MAX];
	char	entFilename[FILENAME_MAX];

	if (argc != 2) {
		fprintf(stderr, "Invalid command line.\n");
		fprintf(stderr, "Usage: splithub <Hub filename with NO extension>\n");
		return -1;
	}
	strcpy(hubFilename, argv[1]);
	strcpy(refFilename, argv[1]);
	strcpy(entFilename, argv[1]);
	strcat(hubFilename, ".HUB");
	strcat(refFilename, ".REF");
	strcat(entFilename, ".ENT");
	if ((hub = fopen(hubFilename, "r")) == NULL) {
		fprintf(stderr, "Cannot open Hub file %s\n", hubFilename);
		return -1;
	}
	if ((ref = fopen(refFilename, "w")) == NULL) {
		fprintf(stderr, "Cannot open Ref file %s\n", refFilename);
		fclose(hub);
		return -1;
	}
	if ((ent = fopen(entFilename, "w")) == NULL) {
		fprintf(stderr, "Cannot open Ent file %s\n", entFilename);
		fclose(hub);
		fclose(ref);
		return -1;
	}
	if (split(hub, ref, ent) != 0) {
		fprintf(stderr, "splithub %s: Hub splitting failed.\n", hubFilename);
		fclose(hub);
		fclose(ref);
		fclose(ent);
		return -1;
	}
	fprintf(stderr, "splithub %s: Hub splitting done.\n", hubFilename);
	fclose(hub);
	fclose(ref);
	fclose(ent);
	return 0;
}