ac4a07e9d4
Removed division from get_stdin, and made it fail properly on failed allocation Fixed the retard brain #include syntax/c.h shit (god I hope I didn't break highlightlighting I'm not - I checked and it outputs the same under the last commit, it's probably fine anon'll fix it what a cuck) Much better input handling, properly using perror and handling multible files even under a noexist condition, probably fixed a seggy on noexist condition
110 lines
2.1 KiB
C
110 lines
2.1 KiB
C
/* main.c
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* Copyright 2023 Anon Anonson, Ognjen 'xolatile' Milan Robovic, Emil Williams
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* SPDX Identifier: GPL-3.0-only / NO WARRANTY / NO GUARANTEE */
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#include <assert.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include "terminal.h"
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#include "syntax/syntax.h"
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#define ALLOCATION_CHUNK (128UL)
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static const char * argv0;
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static char *
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read_entire_file(const char * fn)
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{
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FILE * fp = fopen(fn, "r");
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if (fp)
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{
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size_t len;
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char * b;
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fseek(fp, 0, SEEK_END);
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len = ftell(fp);
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rewind(fp);
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b = malloc(len + 1);
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if (b && fread(b, 1, len, fp)) {
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b[len] = '\0';
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}
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fclose(fp);
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return b;
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}
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else
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{ return NULL; }
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}
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static char *
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get_stdin(void)
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{
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size_t buffer_size = 0;
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size_t n = 1;
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char * buffer = malloc(ALLOCATION_CHUNK);
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if (!buffer)
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{ return NULL; }
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do {
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if (buffer_size + 1 >= (ALLOCATION_CHUNK * n)) {
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buffer = realloc(buffer, ALLOCATION_CHUNK * ++n + 1);
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if (!buffer)
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{ return NULL; }
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buffer[ALLOCATION_CHUNK * n] = '\0';
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}
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if (read(STDIN_FILENO, &buffer[buffer_size], sizeof (*buffer)) == -1)
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{
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free(buffer);
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fprintf(stderr, "%s: Failed to read from stdin\n", argv0);
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return NULL;
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}
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} while (buffer[buffer_size++]);
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buffer[buffer_size - 1] = '\0';
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return buffer;
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}
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int
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main(int argc,
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char ** argv) {
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int arg = 0;
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int ret = 0;
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char * buffer = NULL;
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argv0 = argv[0];
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terminal_hl_init();
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highlight_c(); /* this mustn't break overrides (but definitely does) */
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while (++argv,
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--argc) {
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if (**argv == '-') {
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/* TODO use uthash */
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if (strcmp(*argv+1, "c") == 0) {
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highlight_c();
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}
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else {
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fprintf(stderr, "%s: Unimplemented syntax '%s'\n", argv0, *argv+1);
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return 1;
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}
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}
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else {
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free(buffer);
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arg = 1;
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buffer = read_entire_file(*argv);
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if (!buffer) {
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fprintf(stderr,"%s: cannot access '%s': ", argv0, *argv);
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perror(NULL);
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ret = 2;
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}
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else
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{ render_string(buffer, "cterm"); }
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}
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}
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if (!arg) {
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buffer = get_stdin();
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render_string(buffer, "cterm");
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}
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fflush(stdout);
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hl_deinit();
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free(buffer);
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return ret;
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}
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