X-Git-Url: https://git.danieliu.xyz/?a=blobdiff_plain;ds=inline;f=tmp.c;h=bcb624e6c42c327c7da36241fdf8a442e1f06602;hb=9f1e6a612e7e9ebb4bc703b8e75a723ed7c8779c;hp=bcdfeedf015b0348857b100a8a051cc48f6317ef;hpb=66fa8273ac6f360864e8a594da3310f42379ae1e;p=smdp.git

diff --git a/tmp.c b/tmp.c
index bcdfeed..bcb624e 100644
--- a/tmp.c
+++ b/tmp.c
@@ -1,22 +1,56 @@
+#include <errno.h>
+#include <getopt.h>
 #include <stdio.h>
 #include <stdlib.h>
-#include <errno.h>
+#include <string.h>
 
 #include "include/markdown.h"
 
+void usage() {
+    fprintf(stderr, "Usage: tmp [OPTION]... [FILE]\n");
+    fprintf(stderr, "A command-line based markdown presentation tool.\n\n");
+    fprintf(stderr, "  -d, --debug   enable debug messages on STDERR\n");
+    fprintf(stderr, "                add it multiple times to increases debug level\n\n");
+    fprintf(stderr, "  -h, --help    display this help and exit\n");
+    fprintf(stderr, "\nWith no FILE, or when FILE is -, read standard input.\n\n");
+    exit(EXIT_FAILURE);
+}
+
 int main(int argc, char *argv[]) {
 
+    // define command-line options
+    struct option longopts[] = {
+        { "debug", no_argument, 0, 'd' },
+        { "help",  no_argument, 0, 'h' },
+        { 0, 0, 0, 0 }
+    };
+
+    // parse command-line options
+    int opt, debug = 0;
+    while ((opt = getopt_long(argc, argv, ":dh", longopts, NULL)) != -1) {
+        switch(opt) {
+            case 'd': debug += 1; break;
+            case 'h': usage(); break;
+            case ':': fprintf(stderr, "%s: '%c' requires an argument\n", argv[0], optopt); usage(); break;
+            case '?':
+            default : fprintf(stderr, "%s: option '%c' is invalid\n", argv[0], optopt); usage(); break;
+        }
+    }
+
+    // open file or set input to STDIN
+    char *file;
     FILE *input;
-    document_t *doc;
+    if (optind < argc) {
+        do {
+            file = argv[optind];
+        } while(++optind < argc);
 
-    if (argc > 1) {
-        if(!strcmp(argv[1], "-")) {
+        if(!strcmp(file, "-")) {
             input = stdin;
         } else {
-            input = fopen(argv[1],"r");
+            input = fopen(file,"r");
             if(!input) {
-                fprintf(stderr, "Unable to open '%s': %s\n",
-                    argv[1], strerror(errno));
+                fprintf(stderr, "%s: %s: %s\n", argv[0], file, strerror(errno));
                 exit(EXIT_FAILURE);
             }
         }
@@ -24,6 +58,49 @@ int main(int argc, char *argv[]) {
         input = stdin;
     }
 
+    // load document object from input
+    document_t *doc;
     doc = markdown_load(input);
+
+    if(debug > 0) {
+        // print header to STDERR
+        int offset;
+        line_t *header;
+        if(doc->header) {
+            header = doc->header;
+            while(header &&
+                header->text->size > 0 &&
+                header->text->text[0] == '%') {
+
+                offset = next_blank(header->text, 0) + 1;
+                fprintf(stderr, "header: %s\n", &header->text->text[offset]);
+                header = header->next;
+            }
+        }
+
+        // print page/line count to STDERR
+        int cp = 0, cl = 0;
+        page_t *page = doc->page;
+        line_t *line;
+        while(page) {
+            cp++;
+            if(debug > 1) {
+                fprintf(stderr, "page %i:\n", cp);
+            }
+            line = page->line;
+            cl = 0;
+            while(line) {
+                cl++;
+                if(debug > 1) {
+                    fprintf(stderr, "  line %i: bits = %i, length = %i\n", cl, line->bits, line->text->size);
+                }
+                line = line->next;
+            }
+            if(debug == 1) {
+                fprintf(stderr, "page %i: %i lines\n", cp, cl);
+            }
+            page = page->next;
+        }
+    }
 }