pager-based markdown portable browser

browse.sh

@@ -0,0 +1,22 @@
+#!/usr/bin/env bash
+
+set +e
+
+printf "%s" "Enter URL: "
+read URL
+
+articles=$(curl -s "$URL/articles.txt")
+
+# list=''
+# while IFS= read article; do
+#     list+="$article "
+# done < <(printf '%s' "$articles")
+
+while :
+do
+    article=$(./tools/widgets/list_selector.py --desc="Select an article:" --result="line" -- $articles)
+    if [ -z "$article" ]; then
+        break
+    fi
+    curl -s "$URL/markdown/$article.md" | pager
+done

compile.sh

@@ -37,9 +37,11 @@ done
 
 ./tools/feed_generator.py ./articles/ $URL > ./html/feed.xml
 
+./tools/plaintext_article_listing_generator.py ./articles/ > ./html/articles.txt
+
 mkdir -p "./html/markdown/"
 for d in ./articles/*/; do
   if [ -d "$d" ]; then
-    cp "$d/page.mmd" "./html/markdown/$(basename $d).mdd"
+    cp "$d/page.mmd" "./html/markdown/$(basename $d).md"
   fi
 done

tools/article_utils.py

@@ -1,4 +1,6 @@
 import time, subprocess
+from os import walk, path
+import urllib.parse
 
 def the_line_after_metadata(lines: []) -> int:
     i = 0
@@ -24,3 +26,18 @@ def parse_metadata(filepath: str) -> {}:
         result["Last Edit"] = time.gmtime(int(subprocess.getoutput(r"stat -c %Y " + filepath)))
 
     return result
+
+def parse_article_directory(directory: str) -> {}:
+    articles = {}
+    for root, dirs, _ in walk(directory):
+        for d in dirs:
+            metadata = parse_metadata(path.abspath(root + '/' + d + "/page.mmd"))
+            article = urllib.parse.quote(d)
+            articles[article] = {
+                "metadata": metadata
+            }
+        break
+    return articles
+
+def sort_titles_by_date(articles: {}) -> []:
+    return sorted(articles.keys(), key=lambda a: articles[a]["metadata"].get("Date", time.gmtime(0)), reverse=True)

tools/main_page_generator.py

@@ -1,11 +1,10 @@
 #!/usr/bin/python3
 
 from sys import argv, exit
-from os import walk, path
 from random import choice, seed
-import time, urllib.parse
+import time
 
-from article_utils import parse_metadata
+from article_utils import parse_article_directory, sort_titles_by_date
 from page_shares import wrap_page, ADJECTIVES, MONTHS
 
 if len(argv) <= 1:
@@ -28,17 +27,9 @@ Personal blog of one {choice(ADJECTIVES)} Veclav Talica.
 
 """
 
-artciles = {}
-for root, dirs, _ in walk(argv[1]):
-    for d in dirs:
-        metadata = parse_metadata(path.abspath(root + '/' + d + "/page.mmd"))
-        article = urllib.parse.quote(d)
-        artciles[article] = {
-            "metadata": metadata
-        }
-    break
+artciles = parse_article_directory(argv[1])
 
-for title in sorted(artciles.keys(), key=lambda a: artciles[a]["metadata"].get("Date", time.gmtime(0)), reverse=True):
+for title in sort_titles_by_date(artciles):
     article = artciles[title]
     metadata = article["metadata"]
     page += (

tools/plaintext_article_listing_generator.py

@@ -0,0 +1,15 @@
+#!/usr/bin/env python3
+
+from sys import argv, exit
+
+from article_utils import parse_article_directory, sort_titles_by_date
+
+if len(argv) <= 1:
+    print("No directory was supplied")
+    exit(-1)
+
+articles = parse_article_directory(argv[1])
+
+result = '\n'.join(sort_titles_by_date(articles))
+
+print(result)

tools/widgets/list_selector.py

@@ -0,0 +1,95 @@
+#!/usr/bin/env python3
+
+from sys import argv
+import curses
+
+from wrapper import widget_wrapper
+
+list_starting_arg = 1
+for i, arg in enumerate(argv[1:]):
+    if arg == '--':
+        if i + 2 == len(argv):
+            print("Empty list given")
+            exit(-1)
+        list_starting_arg = i + 2
+        break
+else:
+    print("List starting -- wasn't given")
+    exit(-1)
+
+desc_arg = ''
+result_arg = 'index'
+
+# todo: Generalize and simplify over descriptor object.
+for arg in argv[1:]:
+    if arg.startswith('--'):
+        if arg == '--':
+            break
+        elif arg.startswith('--result='):
+            result_arg = arg[arg.find('=') + 1:]
+            if result_arg not in ['index', 'line']:
+                print("Invalid --result=")
+                exit(-1)
+        elif arg.startswith('--desc='):
+            desc_arg = arg[arg.find('=') + 1:]
+        else:
+            print("Unknown parameter ", arg)
+            exit(-1)
+    else:
+        print("Unknown parameter ", arg)
+        exit(-1)
+
+current = 0
+lines = argv[list_starting_arg:]
+
+list_box = None
+
+def init(screen):
+    global list_box
+
+    curses.start_color()
+    curses.curs_set(0)
+
+    y = 0
+    if desc_arg != '':
+        list_box = screen.subwin(y + 1, 0)
+        y += 1
+
+def draw_list_box():
+    y = 0
+
+    list_box.border()
+    y += 1
+
+    for i, line in enumerate(lines):
+        list_box.addstr(y, 1, line, curses.A_REVERSE if i == current else curses.A_NORMAL)
+        y += 1
+
+    list_box.refresh()
+
+def driver(screen):
+    global current
+
+    y = 0
+
+    if desc_arg != '':
+        screen.addstr(y, 0, desc_arg)
+        y += 1
+
+    draw_list_box()
+
+    key = screen.getch()
+    if key == curses.KEY_DOWN:
+        current = (current + 1) % len(lines)
+    elif key == curses.KEY_UP:
+        current = len(lines) - 1 if current == 0 else current - 1
+    elif key == curses.KEY_ENTER or key == 10 or key == 13:
+        if result_arg == 'index':
+            return str(current)
+        elif result_arg == 'line':
+            return lines[current]
+
+    screen.refresh()
+
+if __name__ == "__main__":
+    print(widget_wrapper(init, driver))

tools/widgets/wrapper.py

@@ -0,0 +1,52 @@
+import curses
+import signal
+import atexit
+import os, sys
+from sys import argv, exit
+
+def handler(signum, frame):
+    curses.endwin()
+    exit(1)
+
+# def exit_handler():
+#     curses.endwin()
+
+init = None
+driver = None
+
+def curses_wrapper(screen):
+    curses.noecho()
+    curses.cbreak()
+    screen.keypad(True)
+
+    init(screen)
+
+    while True:
+        result = driver(screen)
+        if result != None:
+            return result
+
+def widget_wrapper(p_init, p_driver):
+    signal.signal(signal.SIGINT, handler)
+    # atexit.register(exit_handler)
+
+    global init, driver
+    init = p_init
+    driver = p_driver
+
+    with open('/dev/tty', 'rb') as inf, open('/dev/tty', 'wb') as outf:
+        saved_stdin = os.dup(0)
+        saved_stdout = os.dup(1)
+        saved_stderr = os.dup(2)
+
+        os.dup2(inf.fileno(), 0)
+        os.dup2(outf.fileno(), 1)
+        os.dup2(outf.fileno(), 2)
+
+        result = curses.wrapper(curses_wrapper)
+
+        os.dup2(saved_stdin, 0)
+        os.dup2(saved_stdout, 1)
+        os.dup2(saved_stderr, 2)
+
+        return result