task

commit ae9352218f2d7d9ed2b9dc59be4096957c087577
parent b60c0f6cbf8446b2c3d1710adb3fce8caa53ef6b
Author: brookjeynes <me@brookjeynes.dev>
Date:   Mon, 15 Jun 2026 09:10:44 +1000

feat: add --contexts and --projects flags

Signed-off-by: brookjeynes <me@brookjeynes.dev>

Diffstat:
M
main.c
 | 
163
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

1 file changed, 163 insertions(+), 0 deletions(-)
diff --git a/main.c b/main.c
@@ -1,3 +1,6 @@
+#define _DEFAULT_SOURCE
+
+#include <dirent.h>
 #include <errno.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -17,6 +20,156 @@ static void print_help(const char *program) {
   printf("options:\n");
   printf("  -h, --help           show this help\n");
   printf("  -p, --priority A     set priority A-Z\n");
+  printf("  --context            list all known contexts\n");
+  printf("  --projects           list all known projects\n");
+}
+
+int has_txt_extension(const char *name) {
+  size_t len = strlen(name);
+  return len >= 4 && strcmp(name + len - 4, ".txt") == 0;
+}
+
+static void print_properties(char identifier) {
+  struct dirent *dp;
+  FILE *fd = NULL;
+  int rc = 1;
+
+  char *properties[1024];
+  size_t properties_len = 0;
+
+  DIR *dirp = opendir(".");
+  if (dirp == NULL) {
+    fprintf(stderr, "err: failed to open directory: %s\n", strerror(errno));
+    goto cleanup;
+  }
+
+  for (;;) {
+    errno = 0;
+    dp = readdir(dirp);
+    if (dp == NULL) {
+      if (errno == 0) {
+        break;
+      }
+      fprintf(stderr, "err: failed to iterate directory: %s\n",
+              strerror(errno));
+      goto cleanup;
+    }
+
+    if (dp->d_type != DT_REG) {
+      continue;
+    }
+
+    if (has_txt_extension(dp->d_name) == 0) {
+      continue;
+    }
+
+    fd = fopen(dp->d_name, "r");
+    if (fd == NULL) {
+      fprintf(stderr, "err: failed to open file: %s\n", strerror(errno));
+      goto cleanup;
+    }
+
+    char line[1024];
+    if (fgets(line, sizeof line, fd) == NULL) {
+      if (ferror(fd)) {
+        fprintf(stderr, "err: failed to read file: %s\n", strerror(errno));
+        goto cleanup;
+      }
+
+      // empty file
+      if (fclose(fd) != 0) {
+        fprintf(stderr, "err: failed to close file: %s\n", strerror(errno));
+        goto cleanup;
+      }
+
+      fd = NULL;
+      continue;
+    }
+
+    size_t byte = 0;
+    while (line[byte] != '\0') {
+      char c = line[byte];
+
+      if (c == identifier) {
+        char property[1024];
+        size_t property_len = 0;
+
+        while (line[byte] != ' ' && line[byte] != '\n' && line[byte] != '\0' &&
+               property_len < sizeof(property) - 1) {
+          property[property_len] = line[byte];
+          property_len++;
+          byte++;
+        }
+        property[property_len] = '\0';
+        property_len++;
+
+        char *property_ptr = malloc(sizeof(char) * property_len);
+        if (property_ptr == NULL) {
+          fprintf(stderr, "err: failed to alloc space for read property: %s\n",
+                  strerror(errno));
+          goto cleanup;
+        }
+
+        if (property_len < sizeof(property)) {
+          memcpy(property_ptr, property, property_len);
+        }
+
+        if (properties_len == sizeof(properties) / sizeof(properties[0])) {
+          fprintf(stderr, "err: too many properties\n");
+          free(property_ptr);
+          goto cleanup;
+        }
+
+        properties[properties_len] = property_ptr;
+        properties_len++;
+      } else {
+        byte++;
+      }
+    }
+
+    if (fclose(fd) != 0) {
+      fd = NULL;
+      fprintf(stderr, "err: failed to close file: %s\n", strerror(errno));
+      goto cleanup;
+    }
+    fd = NULL;
+  }
+
+  rc = 0;
+
+  for (size_t i = 0; i < properties_len; i++) {
+    int is_duplicate = 0;
+    for (size_t j = i; j > 0; j--) {
+      if (strcmp(properties[i], properties[j - 1]) == 0) {
+        is_duplicate = 1;
+        break;
+      }
+    }
+
+    if (is_duplicate == 1) {
+      continue;
+    }
+
+    printf("%s\n", properties[i]);
+  }
+
+cleanup:
+  if (fd != NULL) {
+    fclose(fd);
+  }
+
+  for (size_t i = 0; i < properties_len; i++) {
+    free(properties[i]);
+  }
+
+  if (dirp != NULL && closedir(dirp) != 0 && rc == 0) {
+    fprintf(stderr, "err: failed to close directory: %s\n", strerror(errno));
+    rc = 1;
+  }
+
+  if (rc != 0) {
+    exit(1);
+  }
 }
 
 int main(int argc, char *argv[]) {
@@ -29,6 +182,16 @@ int main(int argc, char *argv[]) {
     return 0;
   }
 
+  if (argc > 1 && (strcmp(argv[1], "--contexts") == 0)) {
+    print_properties('@');
+    return 0;
+  }
+
+  if (argc > 1 && (strcmp(argv[1], "--projects") == 0)) {
+    print_properties('+');
+    return 0;
+  }
+
   if (argc == 1) {
     fprintf(stderr, "err: title required\n");
     exit(1);