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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <locale.h>
#include <wchar.h>
#include <errno.h>
#include "atables.h"
#include "wtable.h"
const char **table = ata2utf;
const char *inverse_on = "\x1b[7m";
const char *inverse_off = "\x1b[0m";
int underline = 0, reverse = 0, textmode = 0, ics = 0;
void print_help(void) {
printf("Usage: a8cat [-i] [-u] [file ...]\n");
}
FILE *open_input(const char *file) {
FILE *input;
if(file[0] == '-' && file[1] == 0) {
if(freopen(NULL, "rb", stdin)) {
input = stdin;
} else {
perror("(standard input)");
return NULL;
}
} else if(!(input = fopen(file, "rb"))) {
perror(file);
return NULL;
}
return input;
}
int handle_escape_seq(int inv, FILE *input) {
int count, c;
char buf[5] = { 0x1b, 0, 0, 0, 0 };
for(count = 1; count < 4; count++) {
c = fgetwc(input);
if(c == WEOF) break;
buf[count] = c; /* FIXME: might be a wide char! */
}
if(strcmp(inverse_on, buf) == 0) {
return 0x80;
} else if(strcmp(inverse_off, buf) == 0) {
return 0;
} else {
fputs(buf, stdout);
return inv;
}
}
int a8revcat(const char *file) {
FILE *input;
int c, d, inv = 0;
if( !(input = open_input(file)) )
return 1;
setlocale(LC_CTYPE, "en_US.UTF-8");
while( (c = fgetwc(input)) != WEOF ) {
if(c == 0x1b) {
inv = handle_escape_seq(inv, input);
} else if(c == '\n') {
putchar(0x9b);
} else if(c < 0x80) {
putchar(c | inv);
} else {
d = wchar2atascii(c, ics);
if(d == -1) {
fprintf(stderr, "warning: unrecognized Unicode character %04x\n", c);
} else {
putchar(d | inv);
}
}
}
return 0;
}
/* XXX: hard-coded ANSI/vt100 escape sequences. would be
better but more complex to use terminfo to support any ol'
terminal... */
void inverse(int onoff) {
fputs((onoff ? inverse_on : inverse_off ), stdout);
}
int a8cat(const char *file) {
FILE *input;
int c, inv = 0;
if( !(input = open_input(file)) )
return 1;
while( (c = fgetc(input)) != EOF ) {
if(c == 0x9b) {
putchar('\n');
continue;
}
if(textmode) {
switch(c) {
case 0x09: /* Atari TAB is same as ASCII */
putchar('\t');
continue;
case 0xfd: /* bell */
putchar('\a');
continue;
case 0x7e: /* backspace */
putchar('\b');
continue;
default: break;
}
}
if(!underline) {
/* strings of inverse chars only get one "inverse on" ANSI
sequence, and one "inverse off" afterwards. */
if(c & 0x80) {
if(!inv) {
inv = 1;
inverse(1);
}
} else {
if(inv) {
inv = 0;
inverse(0);
}
}
}
fputs(table[c & 0x7f], stdout);
if(underline && (c & 0x80)) {
putchar('\b');
putchar('_');
}
}
/* gotta turn off inverse, so if there's another file after this one,
it doesn't start out being printed in inverse. */
if(inv && !underline) inverse(0);
fclose(input);
return 0;
}
int main(int argc, char **argv) {
int opt, result = 0;
while( (opt = getopt(argc, argv, "ihurt")) != -1) {
switch(opt) {
case 'i': table = ics2utf; ics = 1; break;
case 'h': print_help(); exit(0); break;
case 'u': underline = 1; break;
case 'r': reverse = 1; break;
case 't': textmode = 1; break;
default: print_help(); exit(1); break;
}
}
if(reverse) {
if(underline || textmode) {
fprintf(stderr, "-t and -u options don't make sense with -r.\n");
exit(1);
}
}
if(optind >= argc) {
result = (reverse ? a8revcat("-") : a8cat("-"));
} else {
while(optind < argc) {
result += (reverse ? a8revcat(argv[optind]) : a8cat(argv[optind]));
optind++;
}
}
exit(result);
}
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