dep

main.c (11871B)

---

 #include <dirent.h>
 #include <limits.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <sys/stat.h>
 #include <time.h>
 #include <unistd.h>
 
 #include "cofyc/argparse.h"
 #include "command/command.h"
 #include "common/fs-utils.h"
 #include "common/github-utils.h"
 #include "common/net-utils.h"
 
 #define CACHE_MAX_AGE_SECONDS (7 * 24 * 60 * 60)
 
 static unsigned long hash_string(const char *str) {
   unsigned long hash = 5381;
   int           c;
   while ((c = *str++)) {
     hash = ((hash << 5) + hash) + c;
   }
   return hash;
 }
 
 static void url_to_cache_filename(const char *url, char *filename, size_t size) {
   unsigned long hash = hash_string(url);
   snprintf(filename, size, "%lu", hash);
 }
 
 static int is_cache_outdated(const char *cache_path) {
   struct stat st;
   if (stat(cache_path, &st) != 0) {
     return 1;
   }
   time_t now      = time(NULL);
   time_t file_age = now - st.st_mtime;
   return file_age > CACHE_MAX_AGE_SECONDS;
 }
 
 static int extract_version_from_depname(const char *depname_with_version, char *depname, char *version,
                                         size_t depname_size, size_t version_size) {
   const char *at_pos = strchr(depname_with_version, '@');
   if (!at_pos) {
     strncpy(depname, depname_with_version, depname_size - 1);
     depname[depname_size - 1] = '\0';
     version[0]                = '\0';
     return 0;
   }
 
   size_t depname_len = at_pos - depname_with_version;
   if (depname_len >= depname_size) {
     depname_len = depname_size - 1;
   }
   strncpy(depname, depname_with_version, depname_len);
   depname[depname_len] = '\0';
 
   strncpy(version, at_pos + 1, version_size - 1);
   version[version_size - 1] = '\0';
   return 0;
 }
 
 static int parse_manifest_line(const char *line, char *depname, char *version, char *url, size_t depname_size,
                                size_t version_size, size_t url_size) {
   char *line_copy = strdup(line);
   if (!line_copy) return -1;
 
   char *comment = strchr(line_copy, '#');
   if (comment) *comment = '\0';
 
   char *trimmed = trim_whitespace(line_copy);
   if (strlen(trimmed) == 0) {
     free(line_copy);
     return -1;
   }
 
   char *space_pos = strchr(trimmed, ' ');
   char *tab_pos   = strchr(trimmed, '\t');
   char *first_ws  = NULL;
 
   if (space_pos && tab_pos) {
     first_ws = (space_pos < tab_pos) ? space_pos : tab_pos;
   } else if (space_pos) {
     first_ws = space_pos;
   } else if (tab_pos) {
     first_ws = tab_pos;
   }
 
   int result = 0;
 
   if (first_ws) {
     size_t name_len = first_ws - trimmed;
     if (name_len >= depname_size) {
       name_len = depname_size - 1;
     }
     strncpy(depname, trimmed, name_len);
     depname[name_len] = '\0';
 
     char *url_start = trim_whitespace(first_ws + 1);
     strncpy(url, url_start, url_size - 1);
     url[url_size - 1] = '\0';
   } else {
     strncpy(depname, trimmed, depname_size - 1);
     depname[depname_size - 1] = '\0';
     url[0]                    = '\0';
   }
 
   char depname_copy[256];
   strncpy(depname_copy, depname, sizeof(depname_copy) - 1);
   depname_copy[sizeof(depname_copy) - 1] = '\0';
 
   char version_from_depname[256];
   extract_version_from_depname(depname_copy, depname, version_from_depname, depname_size, sizeof(version_from_depname));
 
   if (version_from_depname[0] != '\0') {
     strncpy(version, version_from_depname, version_size - 1);
     version[version_size - 1] = '\0';
   } else {
     version[0] = '\0';
   }
 
   free(line_copy);
   return result;
 }
 
 static int version_matches(const char *requested, const char *available) {
   if (!requested || requested[0] == '\0') {
     return 1;
   }
   if (!available || available[0] == '\0') {
     return 0;
   }
   return strcmp(requested, available) == 0;
 }
 
 static int append_to_dep_file(const char *name, const char *spec) {
   const char *dep_path = ".dep";
   FILE       *f        = fopen(dep_path, "a");
   if (!f) {
     fprintf(stderr, "Error: could not open .dep file for writing\n");
     return -1;
   }
 
   fseek(f, 0, SEEK_END);
   long pos = ftell(f);
   if (pos > 0) {
     fputc('\n', f);
   }
 
   if (spec && spec[0] != '\0') {
     fprintf(f, "%s %s\n", name, spec);
   } else {
     fprintf(f, "%s\n", name);
   }
 
   fclose(f);
   return 0;
 }
 
 static int add_from_url(const char *name, const char *url) {
   int result = append_to_dep_file(name, url);
   if (result == 0) {
     printf("Added %s to .dep\n", name);
   }
   return result;
 }
 
 static int add_from_repository(const char *name, const char *requested_version) {
   char *repo_dir = get_repo_dir();
   if (!repo_dir) {
     return -1;
   }
 
   char *cache_dir = get_cache_dir();
   if (!cache_dir) {
     free(repo_dir);
     return -1;
   }
 
   mkdir_recursive(cache_dir);
 
   DIR *dir = opendir(repo_dir);
   if (!dir) {
     fprintf(stderr, "Error: could not open repository directory\n");
     free(repo_dir);
     free(cache_dir);
     return -1;
   }
 
   struct dirent *entry;
   int            found = 0;
 
   while (!found && (entry = readdir(dir)) != NULL) {
     if (!strcmp(entry->d_name, ".") || !strcmp(entry->d_name, "..")) continue;
 
     char *repo_dir2 = get_repo_dir();
     if (!repo_dir2) continue;
 
     char filepath[PATH_MAX];
     snprintf(filepath, sizeof(filepath), "%s%s", repo_dir2, entry->d_name);
     free(repo_dir2);
 
     struct stat st;
     if (stat(filepath, &st) < 0 || !S_ISREG(st.st_mode)) continue;
 
     FILE *repo_file = fopen(filepath, "r");
     if (!repo_file) continue;
 
     char line[LINE_MAX];
     while (!found && fgets(line, sizeof(line), repo_file)) {
       char *comment = strchr(line, '#');
       if (comment) *comment = '\0';
 
       char *trimmed = trim_whitespace(line);
       if (strlen(trimmed) == 0) continue;
 
       char repo_name[256]     = {0};
       char manifest_url[1024] = {0};
 
       char *space_pos = strchr(trimmed, ' ');
       char *tab_pos   = strchr(trimmed, '\t');
       char *first_ws  = NULL;
 
       if (space_pos && tab_pos) {
         first_ws = (space_pos < tab_pos) ? space_pos : tab_pos;
       } else if (space_pos) {
         first_ws = space_pos;
       } else if (tab_pos) {
         first_ws = tab_pos;
       }
 
       if (!first_ws) continue;
 
       size_t name_len = first_ws - trimmed;
       if (name_len >= sizeof(repo_name)) {
         name_len = sizeof(repo_name) - 1;
       }
       strncpy(repo_name, trimmed, name_len);
       repo_name[name_len] = '\0';
 
       char *url_start = trim_whitespace(first_ws + 1);
       strncpy(manifest_url, url_start, sizeof(manifest_url) - 1);
       manifest_url[sizeof(manifest_url) - 1] = '\0';
 
       if (strlen(manifest_url) == 0) continue;
 
       char cache_filename[256];
       url_to_cache_filename(manifest_url, cache_filename, sizeof(cache_filename));
 
       char cache_path[PATH_MAX];
       snprintf(cache_path, sizeof(cache_path), "%s%s", cache_dir, cache_filename);
 
       if (is_cache_outdated(cache_path)) {
         printf("Updating cache for repository %s...\n", repo_name);
         size_t size;
         char  *manifest_content = download_url(manifest_url, &size);
         if (manifest_content) {
           FILE *cache_file = fopen(cache_path, "w");
           if (cache_file) {
             fwrite(manifest_content, 1, size, cache_file);
             fclose(cache_file);
           }
           free(manifest_content);
         }
       }
 
       FILE *cache_file = fopen(cache_path, "r");
       if (!cache_file) continue;
 
       char manifest_line[LINE_MAX];
       while (!found && fgets(manifest_line, sizeof(manifest_line), cache_file)) {
         char depname[256]      = {0};
         char version[256]      = {0};
         char tarball_url[1024] = {0};
 
         if (parse_manifest_line(manifest_line, depname, version, tarball_url, sizeof(depname), sizeof(version),
                                 sizeof(tarball_url)) != 0) {
           continue;
         }
 
         if (strcmp(depname, name) != 0) continue;
 
         if (!version_matches(requested_version, version)) continue;
 
         if (strlen(tarball_url) == 0) continue;
 
         printf("Found %s", name);
         if (version[0] != '\0') {
           printf(" version %s", version);
         }
         printf(" in repository %s\n", repo_name);
 
         fclose(cache_file);
         closedir(dir);
         free(repo_dir);
         free(cache_dir);
         return append_to_dep_file(name, tarball_url);
       }
 
       fclose(cache_file);
     }
 
     fclose(repo_file);
   }
 
   closedir(dir);
   free(repo_dir);
   free(cache_dir);
 
   return found ? 0 : -1;
 }
 
 static int add_from_github(const char *name, const char *requested_version) {
   char *full_ref = NULL;
 
   if (requested_version && requested_version[0] != '\0') {
     full_ref = github_matching_ref(name, requested_version);
     if (!full_ref) {
       fprintf(stderr, "Error: ref '%s' not found for %s on GitHub\n", requested_version, name);
       return -1;
     }
     free(full_ref);
     printf("Found %s version %s on GitHub\n", name, requested_version);
     fflush(stdout);
     return append_to_dep_file(name, requested_version);
   } else {
     char *branch = github_default_branch(name);
     if (!branch) {
       fprintf(stderr, "Error: could not determine default branch for %s on GitHub\n", name);
       return -1;
     }
     printf("Found %s on GitHub (default branch: %s)\n", name, branch);
     fflush(stdout);
     free(branch);
     return append_to_dep_file(name, "");
   }
 }
 
 static int cmd_add(int argc, const char **argv) {
   struct argparse_option options[] = {
       OPT_HELP(),
       OPT_END(),
   };
 
   struct argparse argparse;
   argparse_init(&argparse, options, NULL, 0);
   argc = argparse_parse(&argparse, argc, argv);
 
   if (argc < 1) {
     fprintf(stderr, "Error: add requires <name> [version]\n");
     fprintf(stderr, "Usage: dep add <name> [version]\n");
     return 1;
   }
 
   const char *name    = argv[0];
   const char *version = (argc > 1) ? argv[1] : NULL;
 
   if (version && is_url(version)) {
     printf("Adding %s as direct URL: %s\n", name, version);
     return add_from_url(name, version);
   }
 
   printf("Searching repositories for %s", name);
   if (version && strlen(version) > 0) {
     printf(" with version %s", version);
   }
   printf("...\n");
   fflush(stdout);
 
   int result = add_from_repository(name, version);
   if (result == 0) {
     printf("Added %s to .dep\n", name);
     fflush(stdout);
     return 0;
   }
 
   printf("Not found in repositories, trying GitHub...\n");
   fflush(stdout);
   result = add_from_github(name, version);
   if (result == 0) {
     printf("Added %s to .dep\n", name);
     return 0;
   }
 
   fprintf(stderr, "Error: package '%s' not found\n", name);
   return 1;
 }
 
 void __attribute__((constructor)) cmd_add_setup(void) {
   struct cmd_struct *cmd = calloc(1, sizeof(struct cmd_struct));
   if (!cmd) {
     fprintf(stderr, "Failed to allocate memory for add command\n");
     return;
   }
   cmd->next                      = commands;
   cmd->fn                        = cmd_add;
   static const char *add_names[] = {"add", "a", NULL};
   cmd->name                      = add_names;
   cmd->display                   = "a(dd)";
   cmd->description               = "Add a new dependency to the project";
   cmd->help_text =
       "dep add - Add a new dependency to the project\n"
       "\n"
       "Usage:\n"
       "  dep add <name>\n"
       "  dep add <name> <version>\n"
       "  dep add <name> <url>\n"
       "\n"
       "Description:\n"
       "  Add a package to the project's .dep file.\n"
       "\n"
       "  If a version is not specified, the latest version from the repository\n"
       "  will be used, or the default branch from GitHub.\n"
       "\n"
       "  You can also add a dependency with a direct URL.\n"
       "\n"
       "Examples:\n"
       "  dep add finwo/palloc           # Latest from repo or GitHub main branch\n"
       "  dep add finwo/palloc edge     # Specific version/branch\n"
       "  dep add finwo/palloc v1.0.0   # Specific tag\n"
       "  dep add mylib https://example.com/mylib.tar.gz\n";
   commands = cmd;
 }