nat/highlighter-wrapper.py

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#!/usr/bin/env python
try:
import pygments
except ImportError:
print(" Please install python pygments module")
from pygments import highlight
from pygments.lexers import get_lexer_by_name, guess_lexer
from pygments.formatters import HtmlFormatter
import sys
def render(code, lang, theme):
guess = ""
lang_org = lang
try:
lexer = get_lexer_by_name(lang)
except:
try:
guess = 1
lexer = guess_lexer(code)
lang = lexer.aliases[0]
except:
if lang == "autodetect":
out = "Could not autodetect language (returning plain text).\n"
else:
out = "Given language was not found :: '"+lang+"' (returning plain text).\n"
lexer = get_lexer_by_name("text")
html_format = HtmlFormatter(style=theme, noclasses="true", linenos="true", encoding="utf-8")
return highlight(code, lexer, html_format),out
if guess:
out = "Lexer guessed :: "+lang
if lang != lang_org and lang_org != "autodetect":
out += " (although given language was "+lang_org+") "
else:
out = "Successfully used lexer for given language :: "+lang
try:
html_format = HtmlFormatter(style=theme, noclasses="true", linenos="true", encoding="utf-8")
except:
html_format = HtmlFormatter(noclasses="true", linenos="true", encoding="utf-8")
return highlight(code, lexer, html_format),out
def usage(err=0):
print("\n Description, \n")
print(" - This is a small wrapper for the pygments html-formatter.")
print(" It will read data on stdin and simply print it on stdout")
print("\n Usage, \n")
print(" - %s [lang] [style] < FILE" % sys.argv[0])
print(" - %s getlexers" % sys.argv[0])
print(" - %s getstyles" % sys.argv[0])
print("\n Where, \n")
print(" - lang is the language of your code")
print(" - style is the 'theme' for the formatter")
print(" - getlexers will print available lexers (displayname;lexer-name)")
print(" - getstyles will print available styles \n")
sys.exit(err)
def get_styles():
item = pygments.styles.get_all_styles()
for items in item:
print(items)
sys.exit(0)
def get_lexers():
item = pygments.lexers.get_all_lexers()
for items in item:
print(items[0]+";"+items[1][0])
sys.exit(0)
# " Main "
code = ""
if len(sys.argv) >= 2:
for arg in sys.argv:
if arg == '--help' or arg == '-h':
usage()
if arg == 'getlexers':
get_lexers()
if arg == 'getstyles':
get_styles()
if len(sys.argv) == 3:
lang = sys.argv[1]
theme = sys.argv[2]
else:
usage(1);
if not sys.stdin.isatty():
for line in sys.stdin:
code += line
out, stderr = render(code, lang, theme)
print(out)
sys.stderr.write(stderr)
else:
print("err : No data on stdin.")
sys.exit(1)