Squashed 'waflib/' content from commit 6e726eb

git-subtree-dir: waflib
git-subtree-split: 6e726eb11d3e21be410549d27dd1aa94678f3d09

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diff --git a/extras/file_to_object.py b/extras/file_to_object.py
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+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+# Tool to embed file into objects
+
+__author__ = __maintainer__ = "Jérôme Carretero <cJ-waf@zougloub.eu>"
+__copyright__ = "Jérôme Carretero, 2014"
+
+"""
+
+This tool allows to embed file contents in object files (.o).
+It is not exactly portable, and the file contents are reachable
+using various non-portable fashions.
+The goal here is to provide a functional interface to the embedding
+of file data in objects.
+See the ``playground/embedded_resources`` example for an example.
+
+Usage::
+
+   bld(
+    name='pipeline',
+     # ^ Reference this in use="..." for things using the generated code
+    features='file_to_object',
+    source='some.file',
+     # ^ Name of the file to embed in binary section.
+   )
+
+Known issues:
+
+- Destination is named like source, with extension renamed to .o
+  eg. some.file -> some.o
+
+"""
+
+import os
+from waflib import Task, TaskGen, Errors
+
+def filename_c_escape(x):
+	return x.replace("\\", "\\\\")
+
+class file_to_object_s(Task.Task):
+	color = 'CYAN'
+	vars = ['DEST_CPU', 'DEST_BINFMT']
+
+	def run(self):
+		name = []
+		for i, x in enumerate(self.inputs[0].name):
+			if x.isalnum():
+				name.append(x)
+			else:
+				name.append('_')
+		file = self.inputs[0].abspath()
+		size = os.path.getsize(file)
+		if self.env.DEST_CPU in ('x86_64', 'ia', 'aarch64'):
+			unit = 'quad'
+			align = 8
+		elif self.env.DEST_CPU in ('x86','arm', 'thumb', 'm68k'):
+			unit = 'long'
+			align = 4
+		else:
+			raise Errors.WafError("Unsupported DEST_CPU, please report bug!")
+
+		file = filename_c_escape(file)
+		name = "_binary_" + "".join(name)
+		rodata = ".section .rodata"
+		if self.env.DEST_BINFMT == "mac-o":
+			name = "_" + name
+			rodata = ".section __TEXT,__const"
+
+		with open(self.outputs[0].abspath(), 'w') as f:
+			f.write(\
+"""
+	.global %(name)s_start
+	.global %(name)s_end
+	.global %(name)s_size
+	%(rodata)s
+%(name)s_start:
+	.incbin "%(file)s"
+%(name)s_end:
+	.align %(align)d
+%(name)s_size:
+	.%(unit)s 0x%(size)x
+""" % locals())
+
+class file_to_object_c(Task.Task):
+	color = 'CYAN'
+	def run(self):
+		name = []
+		for i, x in enumerate(self.inputs[0].name):
+			if x.isalnum():
+				name.append(x)
+			else:
+				name.append('_')
+		file = self.inputs[0].abspath()
+		size = os.path.getsize(file)
+
+		name = "_binary_" + "".join(name)
+
+		data = self.inputs[0].read('rb')
+		lines, line = [], []
+		for idx_byte, byte in enumerate(data):
+			line.append(byte)
+			if len(line) > 15 or idx_byte == size-1:
+				lines.append(", ".join(("0x%02x" % ord(x)) for x in line))
+				line = []
+		data = ",\n ".join(lines)
+
+		self.outputs[0].write(\
+"""
+unsigned long %(name)s_size = %(size)dL;
+char const %(name)s_start[] = {
+ %(data)s
+};
+char const %(name)s_end[] = {};
+""" % locals())
+
+@TaskGen.feature('file_to_object')
+@TaskGen.before_method('process_source')
+def tg_file_to_object(self):
+	bld = self.bld
+	sources = self.to_nodes(self.source)
+	targets = []
+	for src in sources:
+		if bld.env.F2O_METHOD == ["asm"]:
+			tgt = src.parent.find_or_declare(src.name + '.f2o.s')
+			tsk = self.create_task('file_to_object_s', src, tgt)
+			tsk.cwd = src.parent.abspath() # verify
+		else:
+			tgt = src.parent.find_or_declare(src.name + '.f2o.c')
+			tsk = self.create_task('file_to_object_c', src, tgt)
+			tsk.cwd = src.parent.abspath() # verify
+		targets.append(tgt)
+	self.source = targets
+
+def configure(conf):
+	conf.load('gas')
+	conf.env.F2O_METHOD = ["c"]
+