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/*
* Copyright (c) 2003-2005 Alexandre Ratchov
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the
* following disclaimer in the documentation and/or other
* materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* textin_s implemets inputs from text files (or stdin)
* (open/close, line numbering, etc...). Used by lex_s
*
* textout_s implements outputs into text files (or stdout)
* (open/close, indentation...)
*
*/
#include <stdio.h>
#include <errno.h>
#include "dbg.h"
#include "textio.h"
#include "cons.h"
struct textin_s {
FILE *file;
unsigned isconsole;
unsigned line, col;
};
struct textout_s {
FILE *file;
unsigned indent, isconsole;
};
/* -------------------------------------------------------- input --- */
struct textin_s *
textin_new(char *filename) {
struct textin_s *o;
o = (struct textin_s *)mem_alloc(sizeof(struct textin_s));
if (filename == NULL) {
o->isconsole = 1;
o->file = stdin;
} else {
o->isconsole = 0;
o->file = fopen(filename, "r");
if (o->file == NULL) {
cons_errs(filename, "failed to open input file");
mem_free(o);
return 0;
}
}
o->line = o->col = 0;
return o;
}
void
textin_delete(struct textin_s *o) {
if (!o->isconsole) {
fclose(o->file);
}
mem_free(o);
}
unsigned
textin_getchar(struct textin_s *o, int *c) {
if (o->isconsole) {
*c = cons_getc(); /* because it handles ^C */
} else {
*c = fgetc(o->file);
}
if (*c < 0) {
*c = CHAR_EOF;
if (ferror(o->file)) {
perror("fgetc");
}
return 1;
}
if (*c == '\n') {
o->col = 0;
o->line++;
} else if (*c == '\t') {
o->col += 8;
} else {
o->col++;
}
*c = *c & 0xff;
return 1;
}
void
textin_getpos(struct textin_s *o, unsigned *line, unsigned *col) {
*line = o->line;
*col = o->col;
}
/* ------------------------------------------------------- output --- */
struct textout_s *
textout_new(char *filename) {
struct textout_s *o;
o = (struct textout_s *)mem_alloc(sizeof(struct textout_s));
if (filename != NULL) {
o->file = fopen(filename, "w");
if (o->file == NULL) {
cons_errs(filename, "filed to open output file");
mem_free(o);
return 0;
}
o->isconsole = 0;
} else {
o->file = stdout;
o->isconsole = 1;
}
o->indent = 0;
return o;
}
void
textout_delete(struct textout_s *o) {
if (!o->isconsole) {
fclose(o->file);
}
mem_free(o);
}
void
textout_indent(struct textout_s *o) {
unsigned i;
for (i = 0; i < o->indent; i++) {
fputc('\t', o->file);
}
}
void
textout_shiftleft(struct textout_s *o) {
o->indent--;
}
void
textout_shiftright(struct textout_s *o) {
o->indent++;
}
void
textout_putstr(struct textout_s *o, char *str) {
fputs(str, o->file);
}
void
textout_putlong(struct textout_s *o, unsigned long val) {
fprintf(o->file, "%lu", val);
}
void
textout_putbyte(struct textout_s *o, unsigned val) {
fprintf(o->file, "0x%02x", val & 0xff);
}
/* ------------------------------------------------------------------ */
struct textout_s *tout;
struct textin_s *tin;
void
textio_init(void) {
tout = textout_new(NULL);
tin = textin_new(NULL);
}
void
textio_done(void) {
textout_delete(tout);
tout = 0;
textin_delete(tin);
tin = 0;
}
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