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/*
* UNG's Not GNU
*
* Copyright (c) 2011-2017, Jakob Kaivo <jkk@ung.org>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
*/
#include "ed.h"
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <search.h>
void ed_edit(intmax_t start, intmax_t end, const char *arg)
{
if (ed_state.dirty && ed_state.lastcmd != 'e') {
ed_error("The current file has not been saved");
return;
}
ed_Edit(start, end, arg);
}
void ed_Edit(intmax_t start, intmax_t end, const char *arg)
{
struct ed_line *cursor = ed_state.head;
while (cursor) {
cursor = cursor->next;
remque(cursor->prev);
}
ed_state.nlines = 0;
ed_state.dirty = false;
if (strlen(arg) > 0) {
if (ed_state.filename) {
free(ed_state.filename);
}
ed_state.filename = strdup(arg);
}
ed_state.current = NULL;
ed_state.tail = NULL;
ed_state.head = NULL;
ed_read(start, end, arg);
ed_state.current = ed_state.tail;
ed_state.line = ed_state.nlines;
}
void ed_print(intmax_t start, intmax_t end, const char *arg)
{
(void)start; (void)end; (void)arg;
fputs(ed_state.current->text, stdout);
}
void ed_quit(intmax_t start, intmax_t end, const char *arg)
{
if (ed_state.dirty && ed_state.lastcmd != 'q') {
ed_error("The current file has not been saved");
return;
}
ed_Quit(start, end, arg);
}
void ed_Quit(intmax_t start, intmax_t end, const char *arg)
{
(void)start; (void)end; (void)arg;
exit(0);
}
void ed_read(intmax_t start, intmax_t end, const char *arg)
{
(void)start; (void)end;
intmax_t total = 0;
FILE *f = NULL;
char *file = ed_state.filename;
if (strlen(arg) > 0) {
file = (char*)arg;
}
if (file[0] == '!') {
f = popen(file + 1, "r");
} else {
f = fopen(file, "r");
}
if (f == NULL) {
ed_error("Couldn't open %s: %s", ed_state.filename, strerror(errno));
return;
}
while (!feof(f)) {
struct ed_line *line = calloc(1, sizeof(*line));
if (line == NULL) {
ed_error("Out of memory");
return;
}
size_t n = 0;
total += getline(&(line->text), &n, f);
ed_state.nlines++;
insque(line, ed_state.current);
ed_state.current = line;
if (line->prev == NULL) {
ed_state.head = line;
}
}
if (file[0] == '!') {
pclose(f);
} else {
fclose(f);
}
if (!ed_state.suppress) {
printf("%"PRIdMAX"\n", total);
}
}
void ed_write(intmax_t start, intmax_t end, const char *arg)
{
(void)start; (void)end;
intmax_t total = 0;
FILE *f = NULL;
char *file = ed_state.filename;
if (strlen(arg) > 0) {
file = (char*)arg;
}
if (file[0] == '!') {
f = popen(file + 1, "w");
} else {
f = fopen(file, "w");
}
if (f == NULL) {
ed_error("Couldn't open %s: %s", ed_state.filename, strerror(errno));
return;
}
for (struct ed_line *cursor = ed_state.head; cursor; cursor = cursor->next) {
fputs(cursor->text, f);
total += strlen(cursor->text);
}
if (!ed_state.suppress) {
printf("%"PRIdMAX"\n", total);
}
}
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