dep

Package manager for embedded C libraries
git clone git://git.finwo.net/app/dep
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main.c (2199B)

      1 #include <limits.h>
      2 #include <stdio.h>
      3 #include <stdlib.h>
      4 #include <string.h>
      5 #include <unistd.h>
      6 
      7 #include "command/command.h"
      8 
      9 static int cmd_init(int argc, const char **argv) {
     10   const char *target_dir = ".";
     11   if (argc >= 2) {
     12     target_dir = argv[1];
     13   }
     14 
     15   // Check if target directory exists and is accessible
     16   if (access(target_dir, F_OK | X_OK) != 0) {
     17     fprintf(stderr, "Error: directory '%s' does not exist or is not accessible\n", target_dir);
     18     return 1;
     19   }
     20 
     21   // Build path to .dep file
     22   char dep_path[PATH_MAX];
     23   int  ret = snprintf(dep_path, sizeof(dep_path), "%s/.dep", target_dir);
     24   if (ret < 0 || ret >= sizeof(dep_path)) {
     25     fprintf(stderr, "Error: path too long\n");
     26     return 1;
     27   }
     28 
     29   // Check if .dep already exists
     30   if (access(dep_path, F_OK) == 0) {
     31     printf("Target directory already initialized\n");
     32     return 0;
     33   }
     34 
     35   // Create empty .dep file
     36   FILE *f = fopen(dep_path, "w");
     37   if (!f) {
     38     fprintf(stderr, "Error: could not create .dep file in '%s'\n", target_dir);
     39     return 1;
     40   }
     41   fclose(f);
     42 
     43   printf("Initialized successfully\n");
     44   return 0;
     45 }
     46 
     47 void __attribute__((constructor)) cmd_init_setup(void) {
     48   struct cmd_struct *cmd = calloc(1, sizeof(struct cmd_struct));
     49   if (!cmd) {
     50     fprintf(stderr, "Failed to allocate memory for init command\n");
     51     return;
     52   }
     53   cmd->next                       = commands;
     54   cmd->fn                         = cmd_init;
     55   static const char *init_names[] = {"init", NULL};
     56   cmd->name                       = init_names;
     57   cmd->display                    = "init";
     58   cmd->description                = "Initialize a new project with a .dep file";
     59   cmd->help_text =
     60       "dep init - Initialize a new project with a .dep file\n"
     61       "\n"
     62       "Usage:\n"
     63       "  dep init\n"
     64       "  dep init <directory>\n"
     65       "\n"
     66       "Description:\n"
     67       "  Create an empty .dep file in the current directory or a specified directory.\n"
     68       "  The .dep file is used to list dependencies for the project.\n"
     69       "\n"
     70       "Examples:\n"
     71       "  dep init              # Create .dep in current directory\n"
     72       "  dep init /path/to/project  # Create .dep in specified directory\n";
     73   commands = cmd;
     74 }