BigUpdate

md2gost/renderable/find_font.py

@@ -0,0 +1,43 @@
+from sys import platform, exit
+import subprocess
+import logging
+from functools import cache
+
+
+def __find_font_linux(name: str, bold: bool, italic: bool):
+    result = subprocess.run(
+        "fc-list", shell=True, check=True, stdout=subprocess.PIPE,
+        stderr=subprocess.PIPE, text=True)
+
+    if result.returncode == 0:
+        fonts = \
+            [line.split(":") for line in result.stdout.strip().split("\n")]
+        fonts = [font for font in fonts if len(font) == 3]
+    else:
+        logging.log(logging.ERROR, "fc-list not found")
+        exit(1)
+
+    for path, names, styles in fonts:
+        if (name in names
+                and ("Bold" in styles) == bool(bold)
+                and ("Italic" in styles) == bool(italic)):
+            return path
+    raise ValueError(f"Font {name} not found")
+
+
+@cache
+def find_font(name: str, bold: bool, italic: bool):
+    if not name:
+        raise ValueError("Invalid font")
+    if platform == "linux":
+        return __find_font_linux(name, bold, italic)
+    else:
+        from matplotlib.font_manager import findfont, FontProperties
+        return findfont(FontProperties(
+            family=name,
+            weight="bold" if bold else "normal",
+            style="italic" if italic else "normal"), fallback_to_default=False)
+
+
+if __name__ == "__main__":
+    print(find_font("Courier New", False, False))