Better naming throughout to match `spec`.

README.md

@@ -2,20 +2,7 @@
 
 CLI utility for initializing projects in reproducible ways.
 
-## Problem
-
-Nix supports the concept of [templates](https://nixos.org/manual/nix/stable/command-ref/new-cli/nix3-flake-init)
-out of the box, but the usefulness of the implementation is dubious. In
-particular,
-```bash
-> nix flake init
-```
-simply copies the files specified in the template directory to the current
-local directory, with no means of configuring the copied files. This is
-especially useless when working with projects that typically generate files
-on initialization (i.e. most projects).
-
-## How This Works
+## Overview
 
 Within the `specs` directory exists so-called *specs*. A spec is a directory
 containing a `spec.json` file and a `run.sh` file. The former is configured like
@@ -28,9 +15,9 @@ so:
 ```
 
 The keys of this top-level JSON object correspond to the parameters that are
-prompted by the `gen-flake` curses interface. The value is used to determine
-what kind of prompt `gen-flake` provides for the given question. Possible value
-types are:
+prompted by the `spec init` curses interface. The value is used to determine
+what kind of prompt `spec` provides for the given question. Possible value types
+include:
 
 * `[...]` (list)
   * This indicates a select option prompt. The user chooses amongst the values

flake.nix

@@ -31,7 +31,7 @@
             ncurses
           ];
           shellHook = ''
-            export GEN_FLAKE_SPEC_PATH="${./specs}"
+            export SPEC_ROOT_DIR="${./specs}"
           '';
         };
       }

include/config.h

@@ -1,18 +1,18 @@
-#ifndef GEN_FLAKE_CONFIG_H
-#define GEN_FLAKE_CONFIG_H
+#ifndef _SPEC_CONFIG_H
+#define _SPEC_CONFIG_H
 
 struct Config {
   // The root directory housing our specs. This string is nonempty.
-  const char *spec_path;
+  const char *root_dir;
   // The name of the spec we want to load. This string is nonempty.
   const char *target;
 };
 
 enum ConfigError {
-  // Indicates the `$GEN_FLAKE_SPEC_PATH` environment variable is not set.
-  ENV_SPEC_PATH_EMPTY = 1,
-  // Indicates the `$GEN_FLAKE_SPEC_PATH` environment variable is empty.
-  ENV_SPEC_PATH_MISSING,
+  // Indicates the `$SPEC_ROOT_DIR` environment variable is empty.
+  ENV_SPEC_ROOT_DIR_MISSING = 1,
+  // Indicates the `$SPEC_ROOT_DIR` environment variable is not set.
+  ENV_SPEC_ROOT_DIR_EMPTY,
   // Indicates the target argument is invalid.
   INVALID_TARGET,
 };
@@ -21,4 +21,4 @@ enum ConfigError load_config(const char *target, struct Config *config);
 
 void free_config(struct Config *config);
 
-#endif /* GEN_FLAKE_CONFIG_H */
+#endif /* _SPEC_CONFIG_H */

include/dyn_array.h

@@ -1,5 +1,5 @@
-#ifndef GEN_FLAKE_DYN_ARRAY_H
-#define GEN_FLAKE_DYN_ARRAY_H
+#ifndef _SPEC_DYN_ARRAY_H
+#define _SPEC_DYN_ARRAY_H
 
 #include <stdlib.h>
 
@@ -19,4 +19,4 @@ void dyn_array_push(struct DynArray *a, void *item);
 
 void dyn_array_free(struct DynArray *a);
 
-#endif /* GEN_FLAKE_DYN_ARRAY_H */
+#endif /* _SPEC_DYN_ARRAY_H */

main.c

@@ -1,70 +1,9 @@
-#include <assert.h>
-#include <glob.h>
-#include <signal.h>
 #include <stdio.h>
 #include <stdlib.h>
-#include <string.h>
-#include <sys/stat.h>
-#include <unistd.h>
 
 #include "config.h"
 #include "dyn_array.h"
 
-static const char *glob_spec_pattern(const struct Config *const config) {
-  assert(config);
-
-  int spec_path_length = strlen(config->spec_path);
-  int target_length = strlen(config->target);
-  // Support paths that have trailing forward slashes.
-  int sep_length = 0;
-  if (config->spec_path[spec_path_length - 1] == '/') {
-    sep_length = 1;
-  }
-
-  char *pattern = calloc(1, spec_path_length + sep_length + target_length + 1);
-  memcpy(pattern, config->spec_path, spec_path_length);
-  if (sep_length) {
-    memcpy(pattern + spec_path_length, "/", sep_length);
-  }
-  memcpy(pattern + spec_path_length + sep_length, config->target,
-         target_length);
-
-  return pattern;
-}
-
-static int glob_specs(char *name, const char *spec_path,
-                      struct DynArray *entries) {
-  assert(name);
-  assert(entries);
-
-  int name_length = strlen(name);
-  char *pattern = malloc(name_length + 3);
-  if (!pattern) {
-    goto cleanup;
-  }
-  memcpy(pattern, name, name_length);
-  memcpy(pattern + name_length + 1, "/*", 3);
-
-  glob_t *pglob = 0;
-
-  int retval = 0;
-  if ((retval = glob(pattern, GLOB_ONLYDIR | GLOB_MARK, 0, pglob))) {
-    goto cleanup;
-  }
-
-  // GLOB_ONLYDIR is just a hint. We still need to actually verify the only
-  // results we are reading in are directories.
-  // TODO:
-
-  globfree(pglob);
-
-cleanup:
-  if (pattern) {
-    free(pattern);
-  }
-  return retval;
-}
-
 int main(int argc, char **argv) {
   int num = 0;
 
@@ -75,18 +14,17 @@ int main(int argc, char **argv) {
 
   struct Config config;
   switch (load_config(argv[1], &config)) {
-  case ENV_SPEC_PATH_EMPTY:
-    fprintf(stderr, "Must specify GEN_FLAKE_SPEC_PATH environment variable.");
+  case ENV_SPEC_ROOT_DIR_MISSING:
+    fprintf(stderr, "Must specify $SPEC_ROOT_DIR environment variable.");
     exit(EXIT_FAILURE);
-  case ENV_SPEC_PATH_MISSING:
-    fprintf(stderr,
-            "GEN_FLAKE_SPEC_PATH environment variable should not be empty.");
+  case ENV_SPEC_ROOT_DIR_EMPTY:
+    fprintf(stderr, "$SPEC_ROOT_DIR environment variable should not be empty.");
     exit(EXIT_FAILURE);
   case INVALID_TARGET:
-    fprintf(stderr, "Spec `%s` is invalid.", argv[1]);
+    fprintf(stderr, "Target spec `%s` is invalid.", argv[1]);
     exit(EXIT_FAILURE);
   default:
-    // Return value of `0` indicates no issue.
+    // A return value of `0` indicates no issue.
     break;
   }
 

src/config.c

@@ -3,15 +3,15 @@
 
 #include "config.h"
 
-const char *ENV_SPEC_PATH = "GEN_FLAKE_SPEC_PATH";
+const char *ENV_SPEC_ROOT_DIR = "SPEC_ROOT_DIR";
 
 enum ConfigError load_config(const char *target, struct Config *config) {
-  const char *spec_path = getenv(ENV_SPEC_PATH);
-  if (spec_path == 0) {
-    return ENV_SPEC_PATH_MISSING;
+  const char *root_dir = getenv(ENV_SPEC_ROOT_DIR);
+  if (root_dir == 0) {
+    return ENV_SPEC_ROOT_DIR_MISSING;
   }
-  if (spec_path[0] == 0) {
-    return ENV_SPEC_PATH_EMPTY;
+  if (root_dir[0] == 0) {
+    return ENV_SPEC_ROOT_DIR_EMPTY;
   }
   if (target == 0) {
     return INVALID_TARGET;
@@ -23,11 +23,11 @@ enum ConfigError load_config(const char *target, struct Config *config) {
   }
 
   config = malloc(sizeof(struct Config));
-  config->spec_path = spec_path;
+  config->root_dir = root_dir;
 
   char *copy_target = calloc(1, target_len + 1);
   strcpy(copy_target, target);
-  config->target=copy_target;
+  config->target = copy_target;
 
   return 0;
 }

src/dyn_array.c

@@ -12,13 +12,11 @@ struct DynArray *dyn_array_new(size_t capacity) {
 
 size_t dyn_array_size(struct DynArray *a) {
   assert(a);
-
   return a->size;
 }
 
 void dyn_array_push(struct DynArray *a, void *item) {
   assert(a);
-
   if (a->size == a->_capacity) {
     // We assume reallocation will work.
     a->_capacity *= 2;
@@ -30,7 +28,6 @@ void dyn_array_push(struct DynArray *a, void *item) {
 
 void dyn_array_free(struct DynArray *a) {
   assert(a);
-
   free(a->buf);
   free(a);
 }