mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-14 13:21:28 +00:00
a8ef403515
Original commit message from CVS: * codegen/*: Copy PyGTK code generator here, to avoid depending on latest version. * configure.ac: Add versioning, ala pygtk, and use the internal code generator instead of the installed one
440 lines
14 KiB
Python
Executable file
440 lines
14 KiB
Python
Executable file
#!/usr/bin/env python
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# -*- Mode: Python; py-indent-offset: 4 -*-
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# Search through a header file looking for function prototypes.
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# For each prototype, generate a scheme style definition.
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# GPL'ed
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# Toby D. Reeves <toby@max.rl.plh.af.mil>
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# Modified by James Henstridge <james@daa.com.au> to output stuff in
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# Havoc's new defs format. Info on this format can be seen at:
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# http://www.gnome.org/mailing-lists/archives/gtk-devel-list/2000-January/0085.shtml
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import string, sys, re, types
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# ------------------ Create typecodes from typenames ---------
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_upperstr_pat1 = re.compile(r'([^A-Z])([A-Z])')
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_upperstr_pat2 = re.compile(r'([A-Z][A-Z])([A-Z][0-9a-z])')
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_upperstr_pat3 = re.compile(r'^([A-Z])([A-Z])')
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def to_upper_str(name):
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"""Converts a typename to the equivalent upercase and underscores
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name. This is used to form the type conversion macros and enum/flag
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name variables"""
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name = _upperstr_pat1.sub(r'\1_\2', name)
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name = _upperstr_pat2.sub(r'\1_\2', name)
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name = _upperstr_pat3.sub(r'\1_\2', name, count=1)
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return string.upper(name)
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def typecode(typename):
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"""create a typecode (eg. GTK_TYPE_WIDGET) from a typename"""
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return string.replace(to_upper_str(typename), '_', '_TYPE_', 1)
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# ------------------ Find object definitions -----------------
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def strip_comments(buf):
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parts = []
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lastpos = 0
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while 1:
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pos = string.find(buf, '/*', lastpos)
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if pos >= 0:
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parts.append(buf[lastpos:pos])
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pos = string.find(buf, '*/', pos)
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if pos >= 0:
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lastpos = pos + 2
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else:
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break
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else:
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parts.append(buf[lastpos:])
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break
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return string.join(parts, '')
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obj_name_pat = "[A-Z][a-z]*[A-Z][A-Za-z0-9]*"
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split_prefix_pat = re.compile('([A-Z][a-z]*)([A-Za-z0-9]+)')
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def find_obj_defs(buf, objdefs=[]):
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"""
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Try to find object definitions in header files.
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"""
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# filter out comments from buffer.
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buf = strip_comments(buf)
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maybeobjdefs = [] # contains all possible objects from file
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# first find all structures that look like they may represent a GtkObject
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pat = re.compile("struct _(" + obj_name_pat + ")\s*{\s*" +
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"(" + obj_name_pat + ")\s+", re.MULTILINE)
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pos = 0
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while pos < len(buf):
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m = pat.search(buf, pos)
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if not m: break
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maybeobjdefs.append((m.group(1), m.group(2)))
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pos = m.end()
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# handle typedef struct { ... } style struct defs.
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pat = re.compile("typedef struct\s+[_\w]*\s*{\s*" +
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"(" + obj_name_pat + ")\s+[^}]*}\s*" +
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"(" + obj_name_pat + ")\s*;", re.MULTILINE)
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pos = 0
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while pos < len(buf):
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m = pat.search(buf, pos)
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if not m: break
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maybeobjdefs.append((m.group(2), m.group(2)))
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pos = m.end()
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# now find all structures that look like they might represent a class:
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pat = re.compile("struct _(" + obj_name_pat + ")Class\s*{\s*" +
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"(" + obj_name_pat + ")Class\s+", re.MULTILINE)
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pos = 0
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while pos < len(buf):
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m = pat.search(buf, pos)
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if not m: break
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t = (m.group(1), m.group(2))
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# if we find an object structure together with a corresponding
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# class structure, then we have probably found a GtkObject subclass.
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if t in maybeobjdefs:
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objdefs.append(t)
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pos = m.end()
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pat = re.compile("typedef struct\s+[_\w]*\s*{\s*" +
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"(" + obj_name_pat + ")Class\s+[^}]*}\s*" +
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"(" + obj_name_pat + ")Class\s*;", re.MULTILINE)
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pos = 0
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while pos < len(buf):
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m = pat.search(buf, pos)
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if not m: break
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t = (m.group(2), m.group(1))
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# if we find an object structure together with a corresponding
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# class structure, then we have probably found a GtkObject subclass.
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if t in maybeobjdefs:
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objdefs.append(t)
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pos = m.end()
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def sort_obj_defs(objdefs):
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objdefs.sort() # not strictly needed, but looks nice
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pos = 0
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while pos < len(objdefs):
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klass,parent = objdefs[pos]
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for i in range(pos+1, len(objdefs)):
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# parent below subclass ... reorder
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if objdefs[i][0] == parent:
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objdefs.insert(i+1, objdefs[pos])
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del objdefs[pos]
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break
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else:
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pos = pos + 1
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return objdefs
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def write_obj_defs(objdefs, output):
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if type(output)==types.StringType:
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fp=open(output,'w')
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elif type(output)==types.FileType:
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fp=output
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else:
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fp=sys.stdout
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fp.write(';; -*- scheme -*-\n')
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fp.write('; object definitions ...\n')
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for klass, parent in objdefs:
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m = split_prefix_pat.match(klass)
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cmodule = None
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cname = klass
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if m:
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cmodule = m.group(1)
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cname = m.group(2)
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fp.write('(define-object ' + cname + '\n')
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if cmodule:
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fp.write(' (in-module "' + cmodule + '")\n')
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if parent:
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fp.write(' (parent "' + parent + '")\n')
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fp.write(' (c-name "' + klass + '")\n')
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fp.write(' (gtype-id "' + typecode(klass) + '")\n')
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# should do something about accessible fields
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fp.write(')\n\n')
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# ------------------ Find enum definitions -----------------
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def find_enum_defs(buf, enums=[]):
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# strip comments
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# bulk comments
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buf = strip_comments(buf)
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buf = re.sub('\n', ' ', buf)
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enum_pat = re.compile(r'enum\s*{([^}]*)}\s*([A-Z][A-Za-z]*)(\s|;)')
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splitter = re.compile(r'\s*,\s', re.MULTILINE)
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pos = 0
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while pos < len(buf):
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m = enum_pat.search(buf, pos)
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if not m: break
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name = m.group(2)
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vals = m.group(1)
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isflags = string.find(vals, '<<') >= 0
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entries = []
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for val in splitter.split(vals):
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if not string.strip(val): continue
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entries.append(string.split(val)[0])
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if name != 'GdkCursorType':
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enums.append((name, isflags, entries))
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pos = m.end()
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def write_enum_defs(enums, output=None):
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if type(output)==types.StringType:
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fp=open(output,'w')
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elif type(output)==types.FileType:
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fp=output
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else:
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fp=sys.stdout
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fp.write(';; Enumerations and flags ...\n\n')
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trans = string.maketrans(string.uppercase + '_', string.lowercase + '-')
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for cname, isflags, entries in enums:
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name = cname
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module = None
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m = split_prefix_pat.match(cname)
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if m:
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module = m.group(1)
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name = m.group(2)
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if isflags:
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fp.write('(define-flags ' + name + '\n')
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else:
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fp.write('(define-enum ' + name + '\n')
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if module:
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fp.write(' (in-module "' + module + '")\n')
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fp.write(' (c-name "' + cname + '")\n')
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fp.write(' (gtype-id "' + typecode(cname) + '")\n')
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prefix = entries[0]
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for ent in entries:
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# shorten prefix til we get a match ...
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# and handle GDK_FONT_FONT, GDK_FONT_FONTSET case
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while ent[:len(prefix)] != prefix or len(prefix) >= len(ent):
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prefix = prefix[:-1]
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prefix_len = len(prefix)
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fp.write(' (values\n')
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for ent in entries:
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fp.write(' \'("%s" "%s")\n' %
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(string.translate(ent[prefix_len:], trans), ent))
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fp.write(' )\n')
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fp.write(')\n\n')
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# ------------------ Find function definitions -----------------
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def clean_func(buf):
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"""
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Ideally would make buf have a single prototype on each line.
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Actually just cuts out a good deal of junk, but leaves lines
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where a regex can figure prototypes out.
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"""
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# bulk comments
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buf = strip_comments(buf)
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# compact continued lines
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pat = re.compile(r"""\\\n""", re.MULTILINE)
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buf=pat.sub('',buf)
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# Preprocess directives
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pat = re.compile(r"""^[#].*?$""", re.MULTILINE)
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buf=pat.sub('',buf)
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#typedefs, stucts, and enums
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pat = re.compile(r"""^(typedef|struct|enum)(\s|.|\n)*?;\s*""", re.MULTILINE)
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buf=pat.sub('',buf)
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#strip DECLS macros
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pat = re.compile(r"""G_BEGIN_DECLS|BEGIN_LIBGTOP_DECLS""", re.MULTILINE)
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buf=pat.sub('',buf)
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#multiple whitespace
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pat = re.compile(r"""\s+""", re.MULTILINE)
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buf=pat.sub(' ',buf)
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#clean up line ends
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pat = re.compile(r""";\s*""", re.MULTILINE)
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buf=pat.sub('\n',buf)
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buf = buf.lstrip()
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#associate *, &, and [] with type instead of variable
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#pat=re.compile(r'\s+([*|&]+)\s*(\w+)')
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pat=re.compile(r' \s* ([*|&]+) \s* (\w+)',re.VERBOSE)
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buf=pat.sub(r'\1 \2', buf)
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pat=re.compile(r'\s+ (\w+) \[ \s* \]',re.VERBOSE)
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buf=pat.sub(r'[] \1', buf)
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# make return types that are const work.
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buf = string.replace(buf, 'G_CONST_RETURN ', 'const-')
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buf = string.replace(buf, 'const ', 'const-')
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return buf
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proto_pat=re.compile(r"""
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(?P<ret>(-|\w|\&|\*)+\s*) # return type
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\s+ # skip whitespace
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(?P<func>\w+)\s*[(] # match the function name until the opening (
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(?P<args>.*?)[)] # group the function arguments
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""", re.IGNORECASE|re.VERBOSE)
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#"""
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arg_split_pat = re.compile("\s*,\s*")
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def define_func(buf,fp):
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buf=clean_func(buf)
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buf=string.split(buf,'\n')
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for p in buf:
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if len(p)==0: continue
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m=proto_pat.match(p)
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if m==None:
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if verbose:
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sys.stderr.write('No match:|%s|\n'%p)
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continue
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func = m.group('func')
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ret = m.group('ret')
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args=m.group('args')
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args=arg_split_pat.split(args)
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for i in range(len(args)):
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spaces = string.count(args[i], ' ')
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if spaces > 1:
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args[i] = string.replace(args[i], ' ', '-', spaces - 1)
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write_func(fp, func, ret, args)
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get_type_pat = re.compile(r'(const-)?([A-Za-z0-9]+)\*?\s+')
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pointer_pat = re.compile('.*\*$')
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func_new_pat = re.compile('(\w+)_new$')
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def write_func(fp, name, ret, args):
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if len(args) >= 1:
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# methods must have at least one argument
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munged_name = string.replace(name, '_', '')
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m = get_type_pat.match(args[0])
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if m:
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obj = m.group(2)
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if munged_name[:len(obj)] == string.lower(obj):
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regex = string.join(map(lambda x: x+'_?',string.lower(obj)),'')
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mname = re.sub(regex, '', name)
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fp.write('(define-method ' + mname + '\n')
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fp.write(' (of-object "' + obj + '")\n')
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fp.write(' (c-name "' + name + '")\n')
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if ret != 'void':
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fp.write(' (return-type "' + ret + '")\n')
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else:
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fp.write(' (return-type "none")\n')
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is_varargs = 0
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has_args = len(args) > 1
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for arg in args[1:]:
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if arg == '...':
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is_varargs = 1
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elif arg in ('void', 'void '):
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has_args = 0
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if has_args:
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fp.write(' (parameters\n')
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for arg in args[1:]:
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if arg != '...':
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tupleArg = tuple(string.split(arg))
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if len(tupleArg) == 2:
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fp.write(' \'("%s" "%s")\n' % tupleArg)
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fp.write(' )\n')
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if is_varargs:
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fp.write(' (varargs #t)\n')
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fp.write(')\n\n')
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return
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# it is either a constructor or normal function
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fp.write('(define-function ' + name + '\n')
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fp.write(' (c-name "' + name + '")\n')
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# Hmmm... Let's asume that a constructor function name
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# ends with '_new' and it returns a pointer.
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m = func_new_pat.match(name)
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if pointer_pat.match(ret) and m:
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cname = ''
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for s in m.group(1).split ('_'):
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cname += s.title()
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if cname != '':
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fp.write(' (is-constructor-of "' + cname + '")\n')
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if ret != 'void':
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fp.write(' (return-type "' + ret + '")\n')
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else:
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fp.write(' (return-type "none")\n')
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is_varargs = 0
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has_args = len(args) > 0
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for arg in args:
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if arg == '...':
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is_varargs = 1
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elif arg in ('void', 'void '):
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has_args = 0
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if has_args:
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fp.write(' (parameters\n')
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for arg in args:
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if arg != '...':
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tupleArg = tuple(string.split(arg))
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if len(tupleArg) == 2:
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fp.write(' \'("%s" "%s")\n' % tupleArg)
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fp.write(' )\n')
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if is_varargs:
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fp.write(' (varargs #t)\n')
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fp.write(')\n\n')
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def write_def(input,output=None):
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fp = open(input)
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buf = fp.read()
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fp.close()
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if type(output) == types.StringType:
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fp = open(output,'w')
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elif type(output) == types.FileType:
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fp = output
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else:
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fp = sys.stdout
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fp.write('\n;; From %s\n\n' % input)
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buf = define_func(buf, fp)
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fp.write('\n')
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# ------------------ Main function -----------------
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verbose=0
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if __name__ == '__main__':
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import getopt
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onlyenums = 0
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onlyobjdefs = 0
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opts, args = getopt.getopt(sys.argv[1:], 'v',
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['onlyenums', 'onlyobjdefs'])
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for o, v in opts:
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if o == '-v':
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verbose = 1
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if o == '--onlyenums':
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onlyenums = 1
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if o == '--onlyobjdefs':
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onlyobjdefs = 1
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if not args[0:1]:
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print 'Must specify at least one input file name'
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sys.exit(-1)
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# read all the object definitions in
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objdefs = []
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enums = []
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for filename in args:
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buf = open(filename).read()
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find_obj_defs(buf, objdefs)
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find_enum_defs(buf, enums)
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objdefs = sort_obj_defs(objdefs)
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if onlyenums:
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write_enum_defs(enums,None)
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elif onlyobjdefs:
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write_obj_defs(objdefs,None)
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else:
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write_obj_defs(objdefs,None)
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write_enum_defs(enums,None)
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for filename in args:
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write_def(filename,None)
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