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|
#!/usr/bin/env python3
"""man page generator for language bindings"""
import dataclasses
import os
import re
import time
from pathlib import Path
@dataclasses.dataclass
class Syntax:
"""a language-specific syntax description"""
nameprefix: str # prefix of SWIG-generated functions
paramstart: str # start of a function declaration
paramsep: str # function parameter separator
paramend: str # end of a function declaration
@dataclasses.dataclass
class Lang:
"""template substitutions for a given language binding"""
types: dict[str, str] # syntax translations, C→this language
syntax: Syntax # how to describe a function in this language
synopsis: str = "" # content for the `.SH SYNOPSIS` man page section
usage: str = "" # content for the `.SH USAGE` man page section
LANGS = {
"sharp": Lang(
{
"Agraph_t*": "SWIGTYPE_p_Agraph_t",
"Agnode_t*": "SWIGTYPE_p_Agnode_t",
"Agedge_t*": "SWIGTYPE_p_Agedge_t",
"Agsym_t*": "SWIGTYPE_p_Agsym_t",
"char*": "string",
"const char*": "string",
"char**": "outdata",
"FILE*": "SWIGTYPE_p_FILE",
"bool": "bool",
"int": "int",
"void": None,
},
Syntax("gv.", "(", ", ", ");"),
),
"go": Lang(
{
"Agraph_t* g": "graph_handle",
"Agraph_t* sg": "subgraph_handle",
"Agnode_t* n": "node_handle",
"Agnode_t* t": "tail_node_handle",
"Agnode_t* h": "head_node_handle",
"Agedge_t* e": "edge_handle",
"Agsym_t* a": "attr_handle",
"char* gne": "type",
"char* name": "name",
"char* tname": "tail_name",
"char* hname": "head_name",
"char* attr": "attr_name",
"char* val": "attr_value",
"char* engine": "engine",
"char* string": "string",
"char** outdata": "outdata",
"char* format": "format",
"FILE* f": "channel",
"void** data": "data_handle",
"Agraph_t*": "graph_handle",
"Agnode_t*": "node_handle",
"Agedge_t*": "edge_handle",
"Agsym_t*": "attribute_handle",
"char*": "string",
"const char*": "string",
"char**": "outdata",
"FILE*": "channel",
"bool": "bool",
"int": "int",
"void**": "data_handle",
"void": None,
},
Syntax("gv.", "(", ", ", ");"),
),
"guile": Lang(
{
"Agraph_t* g": "graph_handle",
"Agraph_t* sg": "subgraph_handle",
"Agnode_t* n": "node_handle",
"Agnode_t* t": "tail_node_handle",
"Agnode_t* h": "head_node_handle",
"Agedge_t* e": "edge_handle",
"Agsym_t* a": "attr_handle",
"char* gne": "type",
"char* name": "name",
"char* tname": "tail_name",
"char* hname": "head_name",
"char* attr": "attr_name",
"char* val": "attr_value",
"char* engine": "engine",
"char* string": "string",
"char** outdata": "outdata",
"char* format": "format",
"FILE* f": "channel",
"void** data": "data_handle",
"Agraph_t*": "graph_handle",
"Agnode_t*": "node_handle",
"Agedge_t*": "edge_handle",
"Agsym_t*": "attribute_handle",
"char*": "string",
"const char*": "string",
"char**": "outdata",
"FILE*": "channel",
"bool": "bool",
"int": "int",
"void**": "data_handle",
"void": None,
},
Syntax("gv.", "(", ", ", ");"),
'(load-extension "./libgv.so" "SWIG_init")',
),
"java": Lang(
{
"Agraph_t*": "SWIGTYPE_p_Agraph_t",
"Agnode_t*": "SWIGTYPE_p_Agnode_t",
"Agedge_t*": "SWIGTYPE_p_Agedge_t",
"Agsym_t*": "SWIGTYPE_p_Agsym_t",
"char*": "string",
"const char*": "string",
"char**": "outdata",
"FILE*": "SWIGTYPE_p_FILE",
"bool": "bool",
"int": "int",
"void": None,
},
Syntax("gv.", "(", ", ", ");"),
'System.loadLibrary("gv");',
),
"lua": Lang(
{
"Agraph_t* g": "graph_handle",
"Agraph_t* sg": "subgraph_handle",
"Agnode_t* n": "node_handle",
"Agnode_t* t": "tail_node_handle",
"Agnode_t* h": "head_node_handle",
"Agedge_t* e": "edge_handle",
"Agsym_t* a": "attr_handle",
"char* gne": "type",
"char* name": "name",
"char* tname": "tail_name",
"char* hname": "head_name",
"char* attr": "attr_name",
"char* val": "attr_value",
"char* engine": "engine",
"char* string": "string",
"char** outdata": "outdata",
"char* format": "format",
"FILE* f": "channel",
"void** data": "data_handle",
"Agraph_t*": "graph_handle",
"Agnode_t*": "node_handle",
"Agedge_t*": "edge_handle",
"Agsym_t*": "attribute_handle",
"char*": "string",
"const char*": "string",
"char**": "outdata",
"FILE*": "channel",
"bool": "bool",
"int": "int",
"void**": "data_handle",
"void": None,
},
Syntax("gv.", "(", ", ", ");"),
"""\
#!/usr/bin/lua
require('gv')""",
),
"perl": Lang(
{
"Agraph_t* g": "graph_handle",
"Agraph_t* sg": "subgraph_handle",
"Agnode_t* n": "node_handle",
"Agnode_t* t": "tail_node_handle",
"Agnode_t* h": "head_node_handle",
"Agedge_t* e": "edge_handle",
"Agsym_t* a": "attr_handle",
"char* gne": "type",
"char* name": "name",
"char* tname": "tail_name",
"char* hname": "head_name",
"char* attr": "attr_name",
"char* val": "attr_value",
"char* engine": "engine",
"char* string": "string",
"char** outdata": "outdata",
"char* format": "format",
"FILE* f": "channel",
"void** data": "data_handle",
"Agraph_t*": "graph_handle",
"Agnode_t*": "node_handle",
"Agedge_t*": "edge_handle",
"Agsym_t*": "attribute_handle",
"char*": "string",
"const char*": "string",
"char**": "outdata",
"FILE*": "channel",
"bool": "bool",
"int": "int",
"void**": "data_handle",
"void": None,
},
Syntax("gv::", "(", ", ", ");"),
"""\
#!/usr/bin/perl
use gv;""",
),
"php": Lang(
{
"Agraph_t* g": "graph_handle",
"Agraph_t* sg": "subgraph_handle",
"Agnode_t* n": "node_handle",
"Agnode_t* t": "tail_node_handle",
"Agnode_t* h": "head_node_handle",
"Agedge_t* e": "edge_handle",
"Agsym_t* a": "attr_handle",
"char* gne": "type",
"char* name": "name",
"char* tname": "tail_name",
"char* hname": "head_name",
"char* attr": "attr_name",
"char* val": "attr_value",
"char* engine": "engine",
"char* string": "string",
"char** outdata": "outdata",
"char* format": "format",
"FILE* f": "channel",
"void** data": "data_handle",
"Agraph_t*": "graph_handle",
"Agnode_t*": "node_handle",
"Agedge_t*": "edge_handle",
"Agsym_t*": "attribute_handle",
"char*": "string",
"const char*": "string",
"char**": "outdata",
"FILE*": "channel",
"bool": "bool",
"int": "int",
"void**": "data_handle",
"void": None,
},
Syntax("gv::", "(", ", ", ");"),
"""\
#!/usr/bin/php
<?
include("gv.php")
...
?>""",
),
"python": Lang(
{
"Agraph_t* g": "graph_handle",
"Agraph_t* sg": "subgraph_handle",
"Agnode_t* n": "node_handle",
"Agnode_t* t": "tail_node_handle",
"Agnode_t* h": "head_node_handle",
"Agedge_t* e": "edge_handle",
"Agsym_t* a": "attr_handle",
"char* gne": "type",
"char* name": "name",
"char* tname": "tail_name",
"char* hname": "head_name",
"char* attr": "attr_name",
"char* val": "attr_value",
"char* engine": "engine",
"char* string": "string",
"char** outdata": "outdata",
"char* format": "format",
"FILE* f": "channel",
"void** data": "data_handle",
"Agraph_t*": "graph_handle",
"Agnode_t*": "node_handle",
"Agedge_t*": "edge_handle",
"Agsym_t*": "attribute_handle",
"char*": "string",
"const char*": "string",
"char**": "outdata",
"FILE*": "channel",
"bool": "bool",
"int": "int",
"void**": "data_handle",
"void": None,
},
Syntax("gv.", "(", ", ", ");"),
"""\
#!/usr/bin/python
import sys
import gv""",
),
"R": Lang(
{
"Agraph_t*": "SWIGTYPE_p_Agraph_t",
"Agnode_t*": "SWIGTYPE_p_Agnode_t",
"Agedge_t*": "SWIGTYPE_p_Agedge_t",
"Agsym_t*": "SWIGTYPE_p_Agsym_t",
"char*": "string",
"const char*": "string",
"char**": "outdata",
"FILE*": "SWIGTYPE_p_FILE",
"bool": "bool",
"int": "int",
"void": None,
},
Syntax("gv.", "(", ", ", ");"),
'System.loadLibrary("gv");',
),
"ruby": Lang(
{
"Agraph_t* g": "graph_handle",
"Agraph_t* sg": "subgraph_handle",
"Agnode_t* n": "node_handle",
"Agnode_t* t": "tail_node_handle",
"Agnode_t* h": "head_node_handle",
"Agedge_t* e": "edge_handle",
"Agsym_t* a": "attr_handle",
"char* gne": "type",
"char* name": "name",
"char* tname": "tail_name",
"char* hname": "head_name",
"char* attr": "attr_name",
"char* val": "attr_value",
"char* engine": "engine",
"char* string": "string",
"char** outdata": "outdata",
"char* format": "format",
"FILE* f": "channel",
"void** data": "data_handle",
"Agraph_t*": "graph_handle",
"Agnode_t*": "node_handle",
"Agedge_t*": "edge_handle",
"Agsym_t*": "attribute_handle",
"char*": "string",
"const char*": "string",
"char**": "outdata",
"FILE*": "channel",
"bool": "bool",
"int": "int",
"void**": "data_handle",
"void": None,
},
Syntax("Gv.", "(", ", ", ");"),
"""\
#!/usr/bin/ruby
require 'gv'""",
),
"tcl": Lang(
{
"Agraph_t* g": "<graph_handle>",
"Agraph_t* sg": "<subgraph_handle>",
"Agnode_t* n": "<node_handle>",
"Agnode_t* t": "<tail_node_handle>",
"Agnode_t* h": "<head_node_handle>",
"Agedge_t* e": "<edge_handle>",
"Agsym_t* a": "<attr_handle>",
"char* gne": "<type>",
"char* name": "<name>",
"char* tname": "<tail_name>",
"char* hname": "<head_name>",
"char* attr": "<attr_name>",
"char* val": "<attr_value>",
"char* engine": "<engine>",
"char* string": "<string>",
"char** outdata": "<outdata>",
"char* format": "<format>",
"FILE* f": "<channel>",
"void** data": "<data_handle>",
"Agraph_t*": "<graph_handle>",
"Agnode_t*": "<node_handle>",
"Agedge_t*": "<edge_handle>",
"Agsym_t*": "<attr_handle>",
"char*": "<string>",
"const char*": "<string>",
"char**": "<outdata>",
"FILE*": "<channel>",
"bool": "<boolean_string>",
"int": "<integer_string>",
"void**": "<data_handle>",
"void": None,
},
Syntax("gv::", "", " ", ""),
"""\
#!/usr/bin/tclsh
package require gv""",
"Requires tcl8.3 or later.",
),
}
# man page content template
TEMPLATE = """\
.TH gv 3{lang_lower} "{buildtime}"
.SH NAME
gv_{lang} - graph manipulation in {lang}
.SH SYNOPSIS
{synopsis}
.SH USAGE
{usage}
.SH INTRODUCTION
.B gv_{lang}
is a dynamically loaded extension for
.B {lang}
that provides access to the graph facilities of
.B graphviz.
.SH COMMANDS
{commands}
.SH KEYWORDS
graph, dot, neato, fdp, circo, twopi, {lang}.
"""
def gv_doc_synopsis(lang: Lang) -> str:
"""generate a substitution for the `.SH SYNOPSIS` section"""
return "\n.br\n".join(lang.synopsis.split("\n"))
def gv_doc_usage(lang: Lang) -> str:
"""generate a substitution for the `.SH USAGE` section"""
return "\n.P\n".join(lang.usage.split("\n"))
def gv_doc_commands(lang: Lang) -> str:
"""generate a substitution for the `.SH COMMANDS` section"""
res = []
fn = Path(__file__).parent / "gv.i"
with open(fn, "rt", encoding="utf-8") as f:
t = f.read()
t = re.sub(r"(.|\n)*?%\{", "", t, count=1, flags=re.MULTILINE)
t = re.sub(r"%\}(.|\n)*", "", t, count=1, flags=re.MULTILINE)
t = re.sub(r"\bextern\b", "", t)
for rec in t.split("\n"):
rec = rec.strip(" \t;)")
if len(rec) == 0:
continue
if c := re.match(r"/\*\*\* (?P<docstring>.*) \*/$", rec):
res += [".TP", c.group("docstring"), ".br"]
continue
if c := re.match(r"/\*\* (?P<docstring>.*) \*/$", rec):
res += [".TP", f"\\fB{c.group('docstring')}\\fR", ".br"]
continue
if re.match(r"/\*.*\*/$", rec):
continue
if re.match("//", rec):
continue
if re.match("#", rec):
continue
params: list[tuple[str, str]] = []
func = None
functype = None
for i, type_name in enumerate(re.split(r"[\(,]", rec)):
type_name = type_name.strip()
type_name = re.sub(r"[ ]+(\**)", r"\1 ", type_name)
type, name = type_name.rsplit(maxsplit=1)
if i == 0:
func = name
functype = type
else:
params += [(type, name)]
par = []
for paramtype, param in params:
if translation := lang.types.get(f"{paramtype} {param}"):
par += [translation]
else:
par += [f"{lang.types[paramtype]} {param}"]
rtype = ""
if function_type := lang.types[functype]:
rtype = f"\\fI{function_type}\\fR "
res += [
f"{rtype}\\fB{lang.syntax.nameprefix}{func}\\fR "
f"\\fI{lang.syntax.paramstart}"
f"{lang.syntax.paramsep.join(par)}{lang.syntax.paramend}\\fR",
".br",
]
return "\n".join(res)
def main():
"""entry point"""
buildtime = os.environ.get("SOURCE_DATE_EPOCH")
if buildtime is None:
buildtime = time.strftime("%d %B %Y", time.gmtime())
for name, lang in LANGS.items():
with open(f"gv.3{name.lower()}", "wt", encoding="utf-8") as f:
f.write(
TEMPLATE.format(
lang_lower=name.lower(),
buildtime=buildtime,
lang=name,
synopsis=gv_doc_synopsis(lang),
usage=gv_doc_usage(lang),
commands=gv_doc_commands(lang),
)
)
if __name__ == "__main__":
main()
|
