make: implemented a build tool for blogc

so, this is basically what happens when you don't have anything better
to do in the christmas weekend. most of this code was written in the
last 2 or 3 days.

i'd like to thank the chivas brothers, the weather and my psychological
problems for this achievement.

on a serious note, this tool still needs a man page, more tests, and the
aws lambda function should be adapted to use it instead of (or together
with) make/busybox.

also, while talking about aws lambda, this tool can be nicely embedded
into the blogc binary, to produce a single "small" static binary for
usage in lambda ;)

1 files changed, 42 insertions, 4 deletions

diff --git a/src/blogc/main.c b/src/blogc/main.c
index 8a22ae2..1bdf2fe 100644
--- a/src/blogc/main.c
+++ b/src/blogc/main.c
@@ -30,6 +30,10 @@
 #include "../common/utf8.h"
 #include "../common/utils.h"
 
+#ifdef MAKE_EMBEDDED
+extern int bm_main(int argc, char **argv);
+#endif
+
 #ifndef PACKAGE_VERSION
 #define PACKAGE_VERSION "Unknown"
 #endif
@@ -40,7 +44,11 @@ blogc_print_help(void)
 {
     printf(
         "usage:\n"
-        "    blogc [-h] [-v] [-d] [-i] [-l] [-D KEY=VALUE ...] [-p KEY] [-t TEMPLATE]\n"
+        "    blogc "
+#ifdef MAKE_EMBEDDED
+        "[-m] "
+#endif
+        "[-h] [-v] [-d] [-i] [-l] [-D KEY=VALUE ...] [-p KEY] [-t TEMPLATE]\n"
         "          [-o OUTPUT] [SOURCE ...] - A blog compiler.\n"
         "\n"
         "positional arguments:\n"
@@ -56,7 +64,11 @@ blogc_print_help(void)
         "    -p KEY        show the value of a global configuration parameter\n"
         "                  after source parsing and exit\n"
         "    -t TEMPLATE   template file\n"
-        "    -o OUTPUT     output file\n");
+        "    -o OUTPUT     output file\n"
+#ifdef MAKE_EMBEDDED
+        "    -m            call and pass arguments to embedded blogc-make\n"
+#endif
+        );
 }
 
 
@@ -64,7 +76,11 @@ static void
 blogc_print_usage(void)
 {
     printf(
-        "usage: blogc [-h] [-v] [-d] [-i] [-l] [-D KEY=VALUE ...] [-p KEY] [-t TEMPLATE]\n"
+        "usage: blogc "
+#ifdef MAKE_EMBEDDED
+        "[-m] "
+#endif
+        "[-h] [-v] [-d] [-i] [-l] [-D KEY=VALUE ...] [-p KEY] [-t TEMPLATE]\n"
         "             [-o OUTPUT] [SOURCE ...]\n");
 }
 
@@ -129,6 +145,14 @@ blogc_read_stdin_to_list(bc_slist_t *l)
 int
 main(int argc, char **argv)
 {
+#ifdef MAKE_EMBEDDED
+    // this isn't going to work on windows, but -m can still be used there.
+    if (bc_str_ends_with(argv[0], "/blogc-make"))
+        return bm_main(argc, argv);
+
+    bool embedded = false;
+#endif
+
     setlocale(LC_ALL, "");
 
     int rv = 0;
@@ -219,6 +243,11 @@ main(int argc, char **argv)
                         pieces = NULL;
                     }
                     break;
+#ifdef MAKE_EMBEDDED
+                case 'm':
+                    embedded = true;
+                    break;
+#endif
                 default:
                     blogc_print_usage();
                     fprintf(stderr, "blogc: error: invalid argument: -%c\n",
@@ -227,8 +256,17 @@ main(int argc, char **argv)
                     goto cleanup;
             }
         }
-        else
+        else {
             sources = bc_slist_append(sources, bc_strdup(argv[i]));
+        }
+
+#ifdef MAKE_EMBEDDED
+        if (embedded) {
+            rv = bm_main(argc, argv);
+            goto cleanup;
+        }
+#endif
+
     }
 
     if (input_stdin)