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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 "atascii.h"
#include "wtable.h"
int reverse = 0, verbose = 0;
atascii_ctx actx;
const char *self;
void set_self(const char *argv0) {
char *p;
self = argv0;
p = strrchr(self, '/');
if(p) self = p + 1;
}
void die(const char *msg) {
fprintf(stderr, "%s: %s\n", self, msg);
exit(1);
}
void print_help(void) {
printf("Usage: %s [-i] [-u] [file ...]\n", self);
}
FILE *open_input(const char *file) {
FILE *input;
if(file[0] == '-' && file[1] == 0) {
if(verbose)
fprintf(stderr, "%s: reading from standard input.\n", self);
if(freopen(NULL, "rb", stdin)) {
input = stdin;
} else {
perror("(standard input)");
return NULL;
}
} else if(!(input = fopen(file, "rb"))) {
perror(file);
return NULL;
}
if(verbose)
fprintf(stderr, "%s: reading from file '%s'.\n", self, file);
return input;
}
int handle_escape_seq(int inv, FILE *input, const char *file, int line) {
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(atascii_inverse_on, buf) == 0) {
return 0x80;
} else if(strcmp(atascii_inverse_off, buf) == 0) {
return 0;
} else {
fprintf(stderr, "%s: warning: %s:%d: unrecognized ANSI escape sequence.\n", self, file, line);
fputs(buf, stdout);
return inv;
}
}
int a8revcat(const char *file) {
FILE *input;
int c, d, inv = 0, line = 1;
if( !(input = open_input(file)) )
return 1;
while( (c = fgetwc(input)) != WEOF ) {
if(c == 0x1b) {
inv = handle_escape_seq(inv, input, file, line);
} else if(c == '\r') {
continue; /* swallow carriage returns */
} else if(c == '\n') {
putchar(0x9b);
line++;
} else if(c == '\t') {
putchar(0x7f);
} else if(c == '\b' || c == 0x7f) {
putchar(0x7e);
} else if(c == '\a') {
putchar(0xfd);
} else if(c < 0x80) {
putchar(c | inv);
} else {
d = wchar2atascii(c, actx.flags & ATA_FLAG_ICS);
if(d == -1) {
fprintf(stderr, "%s: warning: %s:%d: unrecognized Unicode character %04x.\n", self, file, line, c);
} else {
putchar(d | inv);
}
}
}
if(verbose)
fprintf(stderr, "%s: %s: converted %d lines, closing file.\n", self, file, line - 1);
fclose(input);
return 0;
}
int a8cat(const char *file) {
FILE *input;
int c;
char converted[20];
if( !(input = open_input(file)) )
return 1;
while( (c = fgetc(input)) != EOF ) {
fputs(atascii_a2utf(&actx, c, converted), stdout);
}
/* gotta turn off inverse, so if there's another file after this one,
it doesn't start out being printed in inverse. */
fputs(atascii_a2utf(&actx, ATA_CHR_FINISH, converted), stdout);
if(verbose)
fprintf(stderr, "%s: %s: converted %d lines, closing file.\n", self, file, actx.lines - 1);
fclose(input);
return 0;
}
int main(int argc, char **argv) {
int opt, result = 0;
int mode = ATA_MODE_UTF8, flags = 0;
set_self(argv[0]);
if(argc > 1 && strcmp(argv[1], "--help") == 0) {
print_help();
exit(0);
}
if(argc > 1 && strcmp(argv[1], "--version") == 0) {
printf("%s %s\n", self, VERSION);
exit(0);
}
while( (opt = getopt(argc, argv, "ihurtmsv")) != -1) {
switch(opt) {
case 'i': flags |= ATA_FLAG_ICS; break;
case 'h': print_help(); exit(0); break;
case 'u': flags |= ATA_FLAG_UNDERLINE; break;
case 'r': reverse = 1; break;
case 't': flags |= ATA_FLAG_TEXTMODE; break;
case 'm': mode = ATA_MODE_MAGAZINE; break;
case 's': flags |= ATA_FLAG_STRIP_INVERSE; break;
case 'v': verbose = 1; break;
default: print_help(); exit(1); break;
}
}
atascii_context_init(&actx, mode, flags);
if(reverse) {
if(isatty(fileno(stdout)))
die("Refusing to write ATASCII to a terminal.");
/*
if(underline || textmode || stripinv || magazine) {
die("-t, -u, -m, -s options don't make sense with -r.\n");
}
*/
/* the language_country part of the locale doesn't matter,
since we aren't doing localization. the encoding *has*
to be UTF-8. */
setlocale(LC_CTYPE, "en_US.UTF-8");
}
/*
if(magazine) {
if(ics || stripinv || underline) {
die("-i, -s, -u options don't make sense with -m.\n");
}
}
*/
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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