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/*
* unpipe - takes output of pipe and convert to HTML/XML form
*
* Copyright © 1994-2000 World Wide Web Consortium
* See http://www.w3.org/Consortium/Legal/copyright-software
*
* Author: Bert Bos <bert@w3.org>
* Created: 23 May 1999
* Version: $Id: hxunpipe.c,v 1.11 2017/11/24 09:50:25 bbos Exp $
*/
#include "config.h"
#include <stdio.h>
#include <ctype.h>
#include <stdlib.h>
#include <stdbool.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include <assert.h>
#ifdef HAVE_STRING_H
# include <string.h>
#elif HAVE_STRINGS_H
# include <strings.h>
#endif
#include "export.h"
#include "types.e"
#include "heap.e"
#include "errexit.e"
#include "dict.e"
#include "openurl.e"
static int nrattrs = 0;
static char **attrs = NULL;
static bool escape = false;
/* put_text -- replace newlines and print text */
static void put_text(FILE *in)
{
int c, c1, c2;
while ((c = getc(in)) != EOF && c != '\n')
if (c != '\\') {
if (!escape) putchar(c);
else if (c == '<') printf("<");
else if (c == '>') printf(">");
else if (c == '"') printf(""");
else if (c == '&') printf("&");
else if (c == '\'') printf("'");
else putchar(c);
}
else if ((c = getc(in)) == EOF) return; /* Error */
else if (c == '\n') return; /* Error */
else if (c == 'n') putchar('\n');
else if (c == 'r') putchar('\r');
else if (c == 't') putchar('\t');
else if (c == '#') printf("&#");
else if (c < '0' || '7' < c) putchar(c);
else if ((c1 = getc(in)) < '0' || '7' < c1) printf("%c%c", c, c1);
else if ((c2 = getc(in)) < '0' || '7' < c2) printf("%c%c%c", c, c1, c2);
else printf("&#%d;", 64 * (c - '0') + 8 * (c1 - '0') + (c2 - '0'));
}
/* store_attr -- store attributes temporarily */
static void store_attr(FILE *in)
{
# define INC 1014
int c, n = 0;
renewarray(attrs, nrattrs + 1);
attrs[nrattrs] = NULL;
renewarray(attrs[nrattrs], INC);
while ((c = getc(in)) != EOF && c != '\n') {
attrs[nrattrs][n++] = c;
if (n % INC == 0) {renewarray(attrs[nrattrs], INC * (n/INC + 1));}
}
attrs[nrattrs][n] = '\0';
nrattrs++;
}
/* put_attr -- write out attributes */
static void put_attr(void)
{
int i, j;
for (j = 0; j < nrattrs; j++) {
for (i = 0; attrs[j][i] && attrs[j][i] != ' '; i++);
if (attrs[j][i] != ' ') errexit("Incorrect A (attribute) line\n");
if (! eq(attrs[j] + i + 1, "IMPLIED")) {
putchar(' ');
for (i = 0; attrs[j][i] && attrs[j][i] != ' '; i++) putchar(attrs[j][i]);
if (attrs[j][i] != ' ') errexit("Incorrect A (attribute) line\n");
putchar('=');
for (i++; attrs[j][i] && attrs[j][i] != ' '; i++) ; /* skip type */
if (attrs[j][i] != ' ') errexit("Incorrect A (attribute) line\n");
putchar('"');
for (i++; attrs[j][i]; i++) {
if (attrs[j][i] != '\\') putchar(attrs[j][i]);
else if (attrs[j][i+1]) {
i++;
if (attrs[j][i] == 'n') putchar('\n');
else if (attrs[j][i] == 'r') putchar('\r');
else if (attrs[j][i] == 't') putchar('\t');
else if (attrs[j][i] == '#') printf("&#");
else if ('0' <= attrs[j][i] && attrs[j][i] <= '7' &&
'0' <= attrs[j][i+1] && attrs[j][i+1] <= '7' &&
'0' <= attrs[j][i+2] && attrs[j][i+2] <= '7') {
printf("&#%d;", 64 * (attrs[j][i] - '0') +
8 * (attrs[j][i+1] - '0') + (attrs[j][i+2] - '0'));
i += 2;
} else putchar(attrs[j][i]);
}
}
putchar('"');
}
dispose(attrs[j]);
}
nrattrs = 0;
}
/* put_decl -- write a DOCTYPE declaration */
static void put_decl(FILE *in)
{
int c;
bool hasfpi = false;
printf("<!DOCTYPE ");
/* Write name of root element */
while ((c = getc(in)) != EOF && c != '\n' && c != ' ') putchar(c);
/* Write FPI if present */
while (c == ' ') c = getc(in);
if (c == '"') {
if ((c = getc(in)) == EOF || c == '\n')
errexit("Incorrect DOCTYPE declaration\n");
if (c != '"') {
hasfpi = true;
printf(" PUBLIC \"%c", c);
while ((c = getc(in)) != EOF && c != '\n' && c != '"') putchar(c);
if (c != '"') errexit("Incorrect DOCTYPE declaration\n");
putchar('"');
}
c = getc(in);
}
/* Write URL if present */
while (c == ' ') c = getc(in);
if (c != EOF && c != '\n') {
if (hasfpi) printf(" \"%c", c); else printf(" SYSTEM \"%c", c);
while ((c = getc(in)) != EOF && c != '\n') putchar(c);
putchar('"');
}
putchar('>');
}
/* usage -- print usage message and exit */
static void usage(string prog)
{
fprintf(stderr, "Version %s\nUsage: %s [file_or_url]\n", VERSION, prog);
exit(1);
}
int main(int argc, char *argv[])
{
int c, status = 200;
FILE *in = NULL;
bool empty = false;
while ((c = getopt(argc, argv, "b")) != -1)
switch (c) {
case 'b': escape = true; break;
default: usage(argv[0]);
}
if (optind == argc) in = stdin;
else if (optind == argc - 1) in = fopenurl(argv[optind], "r", &status);
else usage(argv[0]);
if (in == NULL) { perror(argv[optind]); exit(2); }
if (status != 200) errexit("%s : %s\n", argv[optind], http_strerror(status));
while ((c = getc(in)) != EOF) {
switch (c) {
case '-': put_text(in); break;
case '?': printf("<?"); put_text(in); printf(">"); break;
case '_': case '*': printf("<!--"); put_text(in); printf("-->"); break;
case 'L': break;
case 'A': store_attr(in); break;
case '(': putchar('<'); put_text(in); put_attr(); putchar('>'); break;
case ')':
if (!empty) {printf("</"); put_text(in); putchar('>');}
else empty = false;
break;
case '|': putchar('<'); put_text(in); put_attr(); printf(" />"); break;
case '!': put_decl(in); break;
case 'e': empty = true; break; /* Generated by onsgmls */
case 'i': case 'o': break; /* Generated by onsgmls */
case 'C': break;
}
}
if (! feof(in)) { perror(argv[0]); exit(1); }
fclose(in);
return 0;
}
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