blogc: dump source file variables as well as global variables

2 files changed, 19 insertions, 8 deletions

diff --git a/man/blogc.1.ronn b/man/blogc.1.ronn
index 96b7874..eb64420 100644
--- a/man/blogc.1.ronn
+++ b/man/blogc.1.ronn
@@ -58,9 +58,15 @@ designed to be used with make(1).
     See blogc-template(7) for details.
 
   * `-p` <KEY>:
-    Show the value of a global configuration parameter right after the source
-    parsing and exits. This is useful to get parameters for your `Makefile`,
-    like the last page when using pagination, see blogc-pagination(7) for details.
+    Show the value of a variable right after the source parsing and exits. This
+    is useful to get parameters for your `Makefile`, like the last page when
+    implementing pagination, see blogc-pagination(7) for details. This can be
+    also useful to dump variables defined in a source file without parsing it
+    manually, if called without `-l`. Please note that variables generated by
+    blogc during rendering process, like `BLOGC_RUSAGE_MEMORY` are not available
+    because blogc will exit without rendering any content when called with this
+    option, and will not even require a template, but variables generated during
+    parsing process, like `CONTENT` are available.
 
   * `-t` <TEMPLATE>:
     Template file. It is a required option, if `blogc` needs to render something.
diff --git a/src/blogc/main.c b/src/blogc/main.c
index 0e6bcc9..1ca0e82 100644
--- a/src/blogc/main.c
+++ b/src/blogc/main.c
@@ -60,9 +60,8 @@ blogc_print_help(void)
         "    -d            enable debug\n"
         "    -i            read list of source files from standard input\n"
         "    -l            build listing page, from multiple source files\n"
-        "    -D KEY=VALUE  set global configuration parameter\n"
-        "    -p KEY        show the value of a global configuration parameter\n"
-        "                  after source parsing and exit\n"
+        "    -D KEY=VALUE  set global variable\n"
+        "    -p KEY        show the value of a variable after source parsing and exit\n"
         "    -t TEMPLATE   template file\n"
         "    -o OUTPUT     output file\n"
 #ifdef MAKE_EMBEDDED
@@ -292,9 +291,15 @@ main(int argc, char **argv)
     }
 
     if (print != NULL) {
-        const char *val = bc_trie_lookup(config, print);
+        const char *val = NULL;
+        if (!listing && s != NULL) {
+            val = bc_trie_lookup(s->data, print);
+        }
+        if (val == NULL) {
+            val = bc_trie_lookup(config, print);
+        }
         if (val == NULL) {
-            fprintf(stderr, "blogc: error: configuration variable not found: %s\n",
+            fprintf(stderr, "blogc: error: variable not found: %s\n",
                 print);
             rv = 3;
         }