127 lines
3.7 KiB
C
127 lines
3.7 KiB
C
#ifndef UTILITIES_H
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#define UTILITIES_H
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <dirent.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include "file.h"
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#include "action_list.h"
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#define RESET "\033[0m"
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#define RED_BG "\033[41m"
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#define GREEN_BG "\033[42m"
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#define BLACK_FG "\033[30m"
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typedef enum {
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PT_NOEXIST,
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PT_FILE,
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PT_DIR,
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PT_OTHER,
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PT_ERROR
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} PathType;
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PathType get_path_type(const char* path) {
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struct stat st;
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int rc = stat(path, &st);
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if (rc != 0) {
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return (errno == ENOENT) ? PT_NOEXIST : PT_ERROR;
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}
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if (S_ISREG(st.st_mode)) return PT_FILE;
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if (S_ISDIR(st.st_mode)) return PT_DIR;
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return PT_OTHER;
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}
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void visualize_diff(File* old_version, File* new_version, ActionList* actions) {
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int* deleted_lines = calloc(old_version->lines, sizeof(int));
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int* inserted_lines = calloc(new_version->lines, sizeof(int));
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if (!deleted_lines || !inserted_lines) {
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free(deleted_lines);
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free(inserted_lines);
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return;
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}
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for (uint64_t i = 0; i < actions->len; i++) {
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if (actions->actions[i].type == DELETE) {
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deleted_lines[actions->actions[i].line_original] = 1;
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} else if (actions->actions[i].type == INSERT) {
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inserted_lines[actions->actions[i].line_changed] = 1;
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}
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}
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uint64_t old_idx = 0, new_idx = 0;
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while (old_idx < old_version->lines || new_idx < new_version->lines) {
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// DELETE
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if (old_idx < old_version->lines && deleted_lines[old_idx]) {
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printf("%s%s%4ld | %s%s\n", RED_BG, BLACK_FG, old_idx+1, old_version->content[old_idx], RESET);
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old_idx++;
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}
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// INSERT
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else if (new_idx < new_version->lines && inserted_lines[new_idx]) {
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printf("%s%s %4ld | %s%s\n", GREEN_BG, BLACK_FG, new_idx+1, new_version->content[new_idx], RESET);
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new_idx++;
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}
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// STAYS
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else if (old_idx < old_version->lines && new_idx < new_version->lines) {
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printf("%4ld %4ld | %s\n", old_idx+1, new_idx+1, old_version->content[old_idx]);
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old_idx++;
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new_idx++;
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}
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// DELETE
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else if (old_idx < old_version->lines) {
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printf("%s%s%4ld | %s%s\n", RED_BG, BLACK_FG, old_idx+1, old_version->content[old_idx], RESET);
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old_idx++;
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}
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// INSERT
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else if (new_idx < new_version->lines) {
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printf("%s%s %4ld | %s%s\n", GREEN_BG, BLACK_FG, new_idx+1, new_version->content[new_idx], RESET);
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new_idx++;
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}
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}
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free(deleted_lines);
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free(inserted_lines);
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}
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// In this function we assume that base is a prefix of path
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// Thus we just need the length of the base to jump ahead in the path
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void cut_path(char* base, char* path) {
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size_t base_len = strlen(base);
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if (strlen(path) < base_len) perror("ERROR: the provided path is smaller than the base path!");
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int add = strlen(path) != base_len ? 1 : 0;
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printf("base: %li\n", base_len);
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strcpy(path, path+base_len+add);
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if (add) {
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char tmp[PATH_MAX];
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snprintf(tmp, sizeof(tmp), "%s/", path);
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strcpy(path, tmp);
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}
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}
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// In this function we assume that the end of the base and the beginning of the
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// path are the same so we can concat them together at that part
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// The path gets mutated in place
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void combine_path(char* base, char* path) {
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size_t base_len = 0;
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for (size_t idx = strlen(base); idx > 0; idx--) {
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if (base[idx] == '/') {
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base_len = idx;
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break;
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}
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}
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char tmp[PATH_MAX];
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snprintf(tmp, sizeof(tmp), "%*s/%s", base_len, base, path);
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strcpy(path, tmp);
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}
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#endif // UTILITIES_H
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