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mailinabox/tools/readable_bash.py

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first pass at making readable documentation by parsing the bash scripts
2014-09-21 17:43:21 +00:00
#!/usr/bin/python3
#
# Generate documentation for how this machine works by
# parsing our bash scripts!
First big pass on PEP8'ing all the things. All PEP8 errors (except line length) have been fixed except one. That one will require a little bit of refactoring.
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import cgi
import re
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import markdown
from modgrammar import *
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def generate_documentation():
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print("""<!DOCTYPE html>
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<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="viewport" content="width=device-width">
<title>Build Your Own Mail Server From Scratch</title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap-theme.min.css">
<style>
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@import url(https://fonts.googleapis.com/css?family=Iceland);
@import url(https://fonts.googleapis.com/css?family=Raleway:400,700);
@import url(https://fonts.googleapis.com/css?family=Ubuntu:300,500);
body {
font-family: Raleway, sans-serif;
font-size: 16px;
color: #555;
}
h2, h3 {
margin-top: .25em;
margin-bottom: .75em;
}
p {
margin-bottom: 1em;
}
.intro p {
margin: 1.5em 0;
}
li {
margin-bottom: .33em;
}
.sourcefile {
padding-top: 1.5em;
padding-bottom: 1em;
font-size: 90%;
text-align: right;
}
.sourcefile a {
color: red;
}
.instructions .row.contd {
border-top: 1px solid #E0E0E0;
}
.prose {
padding-top: 1em;
padding-bottom: 1em;
}
.terminal {
background-color: #EEE;
padding-top: 1em;
padding-bottom: 1em;
}
ul {
padding-left: 1.25em;
}
pre {
color: black;
border: 0;
background: none;
font-size: 100%;
}
div.write-to {
margin: 0 0 1em .5em;
}
div.write-to p {
padding: .5em;
margin: 0;
}
div.write-to .filename {
padding: .25em .5em;
background-color: #666;
color: white;
font-family: monospace;
font-weight: bold;
}
div.write-to .filename span {
font-family: sans-serif;
font-weight: normal;
}
div.write-to pre {
margin: 0;
padding: .5em;
border: 1px solid #999;
border-radius: 0;
font-size: 90%;
}
pre.shell > div:before {
content: "$ ";
color: #666;
}
first pass at making readable documentation by parsing the bash scripts
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</style>
</head>
<body>
<div class="container">
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<div class="row intro">
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<div class="col-xs-12">
<h1>Build Your Own Mail Server From Scratch</h1>
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<p>Here&rsquo;s how you can build your own mail server from scratch.</p>
<p>This document is generated automatically from <a href="https://mailinabox.email">Mail-in-a-Box</a>&rsquo;s setup script <a href="https://github.com/mail-in-a-box/mailinabox">source code</a>.</p>
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<hr>
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</div>
</div>
<div class="container instructions">
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""")
First big pass on PEP8'ing all the things. All PEP8 errors (except line length) have been fixed except one. That one will require a little bit of refactoring.
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parser = Source.parser()
for line in open("setup/start.sh"):
try:
fn = parser.parse_string(line).filename()
except:
continue
if fn in ("setup/start.sh", "setup/preflight.sh", "setup/questions.sh", "setup/firstuser.sh", "setup/management.sh"):
continue
first pass at making readable documentation by parsing the bash scripts
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First big pass on PEP8'ing all the things. All PEP8 errors (except line length) have been fixed except one. That one will require a little bit of refactoring.
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import sys
print(fn, file=sys.stderr)
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First big pass on PEP8'ing all the things. All PEP8 errors (except line length) have been fixed except one. That one will require a little bit of refactoring.
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print(BashScript.parse(fn))
first pass at making readable documentation by parsing the bash scripts
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First big pass on PEP8'ing all the things. All PEP8 errors (except line length) have been fixed except one. That one will require a little bit of refactoring.
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print("""
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<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.10.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
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<script>
$(function() {
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$('.terminal').each(function() {
$(this).outerHeight( $(this).parent().innerHeight() );
});
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})
First big pass on PEP8'ing all the things. All PEP8 errors (except line length) have been fixed except one. That one will require a little bit of refactoring.
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</script>
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</body>
</html>
""")
First big pass on PEP8'ing all the things. All PEP8 errors (except line length) have been fixed except one. That one will require a little bit of refactoring.
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first pass at making readable documentation by parsing the bash scripts
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class HashBang(Grammar):
First big pass on PEP8'ing all the things. All PEP8 errors (except line length) have been fixed except one. That one will require a little bit of refactoring.
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grammar = (L('#!'), REST_OF_LINE, EOL)
def value(self):
return ""
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def strip_indent(s):
First big pass on PEP8'ing all the things. All PEP8 errors (except line length) have been fixed except one. That one will require a little bit of refactoring.
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s = s.replace("\t", " ")
lines = s.split("\n")
try:
min_indent = min(len(re.match(r"\s*", line).group(0)) for line in lines if len(line) > 0)
except ValueError:
# No non-empty lines.
min_indent = 0
lines = [line[min_indent:] for line in lines]
return "\n".join(lines)
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class Comment(Grammar):
First big pass on PEP8'ing all the things. All PEP8 errors (except line length) have been fixed except one. That one will require a little bit of refactoring.
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grammar = ONE_OR_MORE(ZERO_OR_MORE(SPACE), L('#'), REST_OF_LINE, EOL)
def value(self):
if self.string.replace("#", "").strip() == "":
return "\n"
lines = [x[2].string for x in self[0]]
content = "\n".join(lines)
content = strip_indent(content)
return markdown.markdown(content, output_format="html4") + "\n\n"
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FILENAME = WORD('a-z0-9-/.')
First big pass on PEP8'ing all the things. All PEP8 errors (except line length) have been fixed except one. That one will require a little bit of refactoring.
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first pass at making readable documentation by parsing the bash scripts
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class Source(Grammar):
First big pass on PEP8'ing all the things. All PEP8 errors (except line length) have been fixed except one. That one will require a little bit of refactoring.
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grammar = ((L('.') | L('source')), L(' '), FILENAME, Comment | EOL)
def filename(self):
return self[2].string.strip()
def value(self):
return BashScript.parse(self.filename())
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class CatEOF(Grammar):
First big pass on PEP8'ing all the things. All PEP8 errors (except line length) have been fixed except one. That one will require a little bit of refactoring.
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grammar = (ZERO_OR_MORE(SPACE), L('cat '), L('>') | L('>>'), L(' '), ANY_EXCEPT(WHITESPACE), L(" <<"), OPTIONAL(SPACE), L("EOF"), EOL, REPEAT(ANY, greedy=False), EOL, L("EOF"), EOL)
def value(self):
content = self[9].string
# un-escape bash-escaped characters
content = re.sub(r"\\([$])", r"\1", content)
return "<div class='write-to'><div class='filename'>%s <span>(%s)</span></div><pre>%s</pre></div>\n" \
% (self[4].string,
"overwrite" if ">>" not in self[2].string else "append to",
cgi.escape(content))
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class HideOutput(Grammar):
First big pass on PEP8'ing all the things. All PEP8 errors (except line length) have been fixed except one. That one will require a little bit of refactoring.
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grammar = (L("hide_output "), REF("BashElement"))
def value(self):
return self[1].value()
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class EchoLine(Grammar):
First big pass on PEP8'ing all the things. All PEP8 errors (except line length) have been fixed except one. That one will require a little bit of refactoring.
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grammar = (OPTIONAL(SPACE), L("echo "), REST_OF_LINE, EOL)
def value(self):
if "|" in self.string or ">" in self.string:
return "<pre class='shell'><div>" + recode_bash(self.string.strip()) + "</div></pre>\n"
return ""
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class EditConf(Grammar):
First big pass on PEP8'ing all the things. All PEP8 errors (except line length) have been fixed except one. That one will require a little bit of refactoring.
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grammar = (
L('tools/editconf.py '),
FILENAME,
SPACE,
OPTIONAL((LIST_OF(
L("-w") | L("-s") | L("-c ;"),
sep=SPACE,
), SPACE)),
REST_OF_LINE,
OPTIONAL(SPACE),
EOL
)
def value(self):
conffile = self[1]
options = []
eq = "="
if self[3] and "-s" in self[3].string:
eq = " "
for opt in re.split("\s+", self[4].string):
k, v = opt.split("=", 1)
# not sure why newlines are getting doubled
v = re.sub(r"\n+", "", fixup_tokens(v))
options.append("%s%s%s" % (k, eq, v))
return "<div class='write-to'><div class='filename'>" + self[1].string + " <span>(change settings)</span></div><pre>" + "\n".join(cgi.escape(s) for s in options) + "</pre></div>\n"
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class CaptureOutput(Grammar):
First big pass on PEP8'ing all the things. All PEP8 errors (except line length) have been fixed except one. That one will require a little bit of refactoring.
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grammar = OPTIONAL(SPACE), WORD("A-Za-z_"), L('=$('), REST_OF_LINE, L(")"), OPTIONAL(L(';')), EOL
def value(self):
cmd = self[3].string
cmd = cmd.replace("; ", "\n")
return "<div class='write-to'><div class='filename'>$" + self[1].string + "=</div><pre>" + cgi.escape(cmd) + "</pre></div>\n"
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class SedReplace(Grammar):
First big pass on PEP8'ing all the things. All PEP8 errors (except line length) have been fixed except one. That one will require a little bit of refactoring.
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grammar = OPTIONAL(SPACE), L('sed -i "s/'), OPTIONAL(L('^')), ONE_OR_MORE(WORD("-A-Za-z0-9 #=\\{};.*$_!()")), L('/'), ONE_OR_MORE(WORD("-A-Za-z0-9 #=\\{};.*$_!()")), L('/"'), SPACE, FILENAME, EOL
def value(self):
return "<div class='write-to'><div class='filename'>edit<br>" + self[8].string + "</div><p>replace</p><pre>" + cgi.escape(self[3].string.replace(".*", ". . .")) + "</pre><p>with</p><pre>" + cgi.escape(self[5].string.replace("\\n", "\n").replace("\\t", "\t")) + "</pre></div>\n"
more readable bash
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more work on making the bash scripts readable
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class EchoPipe(Grammar):
First big pass on PEP8'ing all the things. All PEP8 errors (except line length) have been fixed except one. That one will require a little bit of refactoring.
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grammar = OPTIONAL(SPACE), L("echo "), REST_OF_LINE, L(' | '), REST_OF_LINE, EOL
def value(self):
text = " ".join("\"%s\"" % s for s in self[2].string.split(" "))
return "<pre class='shell'><div>echo " + recode_bash(text) + " \<br> | " + recode_bash(self[4].string) + "</div></pre>\n"
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more readable bash
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def shell_line(bash):
First big pass on PEP8'ing all the things. All PEP8 errors (except line length) have been fixed except one. That one will require a little bit of refactoring.
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return "<pre class='shell'><div>" + recode_bash(bash.strip()) + "</div></pre>\n"
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class AptGet(Grammar):
First big pass on PEP8'ing all the things. All PEP8 errors (except line length) have been fixed except one. That one will require a little bit of refactoring.
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grammar = (ZERO_OR_MORE(SPACE), L("apt_install "), REST_OF_LINE, EOL)
def value(self):
return shell_line("apt-get install -y " + re.sub(r"\s+", " ", self[2].string))
first pass at making readable documentation by parsing the bash scripts
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class UfwAllow(Grammar):
First big pass on PEP8'ing all the things. All PEP8 errors (except line length) have been fixed except one. That one will require a little bit of refactoring.
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grammar = (ZERO_OR_MORE(SPACE), L("ufw_allow "), REST_OF_LINE, EOL)
def value(self):
return shell_line("ufw allow " + self[2].string)
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class RestartService(Grammar):
First big pass on PEP8'ing all the things. All PEP8 errors (except line length) have been fixed except one. That one will require a little bit of refactoring.
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grammar = (ZERO_OR_MORE(SPACE), L("restart_service "), REST_OF_LINE, EOL)
def value(self):
return shell_line("service " + self[2].string + " restart")
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class OtherLine(Grammar):
First big pass on PEP8'ing all the things. All PEP8 errors (except line length) have been fixed except one. That one will require a little bit of refactoring.
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grammar = (REST_OF_LINE, EOL)
def value(self):
if self.string.strip() == "":
return ""
if "source setup/functions.sh" in self.string:
return ""
if "source /etc/mailinabox.conf" in self.string:
return ""
return "<pre class='shell'><div>" + recode_bash(self.string.strip()) + "</div></pre>\n"
first pass at making readable documentation by parsing the bash scripts
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class BashElement(Grammar):
First big pass on PEP8'ing all the things. All PEP8 errors (except line length) have been fixed except one. That one will require a little bit of refactoring.
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grammar = Comment | CatEOF | EchoPipe | EchoLine | HideOutput | EditConf | SedReplace | AptGet | UfwAllow | RestartService | OtherLine
def value(self):
return self[0].value()
first pass at making readable documentation by parsing the bash scripts
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more work on making the bash scripts readable
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# Make some special characters to private use Unicode code points.
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bash_special_characters1 = {
First big pass on PEP8'ing all the things. All PEP8 errors (except line length) have been fixed except one. That one will require a little bit of refactoring.
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"\n": "\uE000",
" ": "\uE001",
more work on making the bash scripts readable
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}
various improvements in bash comments
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bash_special_characters2 = {
First big pass on PEP8'ing all the things. All PEP8 errors (except line length) have been fixed except one. That one will require a little bit of refactoring.
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"$": "\uE010",
various improvements in bash comments
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}
bash_escapes = {
First big pass on PEP8'ing all the things. All PEP8 errors (except line length) have been fixed except one. That one will require a little bit of refactoring.
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"n": "\uE020",
"t": "\uE021",
various improvements in bash comments
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}
more work on making the bash scripts readable
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First big pass on PEP8'ing all the things. All PEP8 errors (except line length) have been fixed except one. That one will require a little bit of refactoring.
2015-02-22 21:20:02 +00:00
more work on making the bash scripts readable
2014-10-04 21:57:26 +00:00
def quasitokenize(bashscript):
First big pass on PEP8'ing all the things. All PEP8 errors (except line length) have been fixed except one. That one will require a little bit of refactoring.
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# Make a parse of bash easier by making the tokenization easy.
newscript = ""
quote_mode = None
escape_next = False
line_comment = False
subshell = 0
for c in bashscript:
if line_comment:
# We're in a comment until the end of the line.
newscript += c
if c == '\n':
line_comment = False
elif escape_next:
# Previous character was a \. Normally the next character
# comes through literally, but escaped newlines are line
# continuations and some escapes are for special characters
# which we'll recode and then turn back into escapes later.
if c == "\n":
c = " "
elif c in bash_escapes:
c = bash_escapes[c]
newscript += c
escape_next = False
elif c == "\\":
# Escaping next character.
escape_next = True
elif quote_mode is None and c in ('"', "'"):
# Starting a quoted word.
quote_mode = c
elif c == quote_mode:
# Ending a quoted word.
quote_mode = None
elif quote_mode is not None and quote_mode != "EOF" and c in bash_special_characters1:
# Replace special tokens within quoted words so that they
# don't interfere with tokenization later.
newscript += bash_special_characters1[c]
elif quote_mode is None and c == '#':
# Start of a line comment.
newscript += c
line_comment = True
elif quote_mode is None and c == ';' and subshell == 0:
# End of a statement.
newscript += "\n"
elif quote_mode is None and c == '(':
# Start of a subshell.
newscript += c
subshell += 1
elif quote_mode is None and c == ')':
# End of a subshell.
newscript += c
subshell -= 1
elif quote_mode is None and c == '\t':
# Make these just spaces.
if newscript[-1] != " ":
newscript += " "
elif quote_mode is None and c == ' ':
# Collapse consecutive spaces.
if newscript[-1] != " ":
newscript += " "
elif c in bash_special_characters2:
newscript += bash_special_characters2[c]
else:
# All other characters.
newscript += c
# "<< EOF" escaping.
if quote_mode is None and re.search("<<\s*EOF\n$", newscript):
quote_mode = "EOF"
elif quote_mode == "EOF" and re.search("\nEOF\n$", newscript):
quote_mode = None
return newscript
more work on making the bash scripts readable
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various improvements in bash comments
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def recode_bash(s):
First big pass on PEP8'ing all the things. All PEP8 errors (except line length) have been fixed except one. That one will require a little bit of refactoring.
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def requote(tok):
tok = tok.replace("\\", "\\\\")
for c in bash_special_characters2:
tok = tok.replace(c, "\\" + c)
tok = fixup_tokens(tok)
if " " in tok or '"' in tok:
tok = tok.replace("\"", "\\\"")
tok = '"' + tok + '"'
else:
tok = tok.replace("'", "\\'")
return tok
return cgi.escape(" ".join(requote(tok) for tok in s.split(" ")))
various improvements in bash comments
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more work on making the bash scripts readable
2014-10-04 21:57:26 +00:00
def fixup_tokens(s):
First big pass on PEP8'ing all the things. All PEP8 errors (except line length) have been fixed except one. That one will require a little bit of refactoring.
2015-02-22 21:20:02 +00:00
for c, enc in bash_special_characters1.items():
s = s.replace(enc, c)
for c, enc in bash_special_characters2.items():
s = s.replace(enc, c)
for esc, c in bash_escapes.items():
s = s.replace(c, "\\" + esc)
return s
more work on making the bash scripts readable
2014-10-04 21:57:26 +00:00
first pass at making readable documentation by parsing the bash scripts
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class BashScript(Grammar):
First big pass on PEP8'ing all the things. All PEP8 errors (except line length) have been fixed except one. That one will require a little bit of refactoring.
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grammar = (OPTIONAL(HashBang), REPEAT(BashElement))
def value(self):
return [line.value() for line in self[1]]
@staticmethod
def parse(fn):
if fn in ("setup/functions.sh", "/etc/mailinabox.conf"):
return ""
string = open(fn).read()
# tokenize
string = re.sub(".* #NODOC\n", "", string)
string = re.sub("\n\s*if .*then.*|\n\s*fi|\n\s*else|\n\s*elif .*", "", string)
string = quasitokenize(string)
string = re.sub("hide_output ", "", string)
parser = BashScript.parser()
result = parser.parse_string(string)
v = "<div class='row'><div class='col-xs-12 sourcefile'>view the bash source for the following section at <a href=\"%s\">%s</a></div></div>\n" \
% ("https://github.com/mail-in-a-box/mailinabox/tree/master/" + fn, fn)
mode = 0
for item in result.value():
if item.strip() == "":
pass
elif item.startswith("<p") and not item.startswith("<pre"):
clz = ""
if mode == 2:
v += "</div>\n" # col
v += "</div>\n" # row
mode = 0
clz = "contd"
if mode == 0:
v += "<div class='row %s'>\n" % clz
v += "<div class='col-md-6 prose'>\n"
v += item
mode = 1
elif item.startswith("<h"):
if mode != 0:
v += "</div>\n" # col
v += "</div>\n" # row
v += "<div class='row'>\n"
v += "<div class='col-md-6 header'>\n"
v += item
v += "</div>\n" # col
v += "<div class='col-md-6 terminal'> </div>\n"
v += "</div>\n" # row
mode = 0
else:
if mode == 0:
v += "<div class='row'>\n"
v += "<div class='col-md-offset-6 col-md-6 terminal'>\n"
elif mode == 1:
v += "</div>\n"
v += "<div class='col-md-6 terminal'>\n"
mode = 2
v += item
v += "</div>\n" # col
v += "</div>\n" # row
v = fixup_tokens(v)
v = v.replace("</pre>\n<pre class='shell'>", "")
v = re.sub("<pre>([\w\W]*?)</pre>", lambda m: "<pre>" + strip_indent(m.group(1)) + "</pre>", v)
v = re.sub(r"(\$?)PRIMARY_HOSTNAME", r"<b>box.yourdomain.com</b>", v)
v = re.sub(r"\$STORAGE_ROOT", r"<b>$STORE</b>", v)
v = re.sub(r"\$CSR_COUNTRY", r"<b>US</b>", v)
v = v.replace("`pwd`", "<code><b>/path/to/mailinabox</b></code>")
return v
first pass at making readable documentation by parsing the bash scripts
2014-09-21 17:43:21 +00:00
more readable bash
2014-09-21 20:05:11 +00:00
def wrap_lines(text, cols=60):
First big pass on PEP8'ing all the things. All PEP8 errors (except line length) have been fixed except one. That one will require a little bit of refactoring.
2015-02-22 21:20:02 +00:00
ret = ""
words = re.split("(\s+)", text)
linelen = 0
for w in words:
if linelen + len(w) > cols-1:
ret += " \\\n"
ret += " "
linelen = 0
if linelen == 0 and w.strip() == "":
continue
ret += w
linelen += len(w)
return ret
more readable bash
2014-09-21 20:05:11 +00:00
first pass at making readable documentation by parsing the bash scripts
2014-09-21 17:43:21 +00:00
if __name__ == '__main__':
First big pass on PEP8'ing all the things. All PEP8 errors (except line length) have been fixed except one. That one will require a little bit of refactoring.
2015-02-22 21:20:02 +00:00
generate_documentation()