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# ex:ts=4:sw=4:sts=4:et
# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
"""
BitBake Utility Functions
This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation; either version 2 of the License, or (at your option) any later
version.
This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place, Suite 330, Boston, MA 02111-1307 USA.
This file is part of the BitBake build tools.
"""
digits = "0123456789"
ascii_letters = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
import re
def explode_version(s):
r = []
alpha_regexp = re.compile('^([a-zA-Z]+)(.*)$')
numeric_regexp = re.compile('^(\d+)(.*)$')
while (s != ''):
if s[0] in digits:
m = numeric_regexp.match(s)
r.append(int(m.group(1)))
s = m.group(2)
continue
if s[0] in ascii_letters:
m = alpha_regexp.match(s)
r.append(m.group(1))
s = m.group(2)
continue
s = s[1:]
return r
def vercmp_part(a, b):
va = explode_version(a)
vb = explode_version(b)
while True:
if va == []:
ca = None
else:
ca = va.pop(0)
if vb == []:
cb = None
else:
cb = vb.pop(0)
if ca == None and cb == None:
return 0
if ca > cb:
return 1
if ca < cb:
return -1
def vercmp(ta, tb):
(va, ra) = ta
(vb, rb) = tb
r = vercmp_part(va, vb)
if (r == 0):
r = vercmp_part(ra, rb)
return r
def explode_deps(s):
"""
Take an RDEPENDS style string of format:
"DEPEND1 (optional version) DEPEND2 (optional version) ..."
and return a list of dependencies.
Version information is ignored.
"""
r = []
l = s.split()
flag = False
for i in l:
if i[0] == '(':
flag = True
j = []
if flag:
j.append(i)
else:
r.append(i)
if flag and i.endswith(')'):
flag = False
# Ignore version
#r[-1] += ' ' + ' '.join(j)
return r
def _print_trace(body, line):
"""
Print the Environment of a Text Body
"""
import bb
# print the environment of the method
bb.error("Printing the environment of the function")
min_line = max(1,line-4)
max_line = min(line+4,len(body)-1)
for i in range(min_line,max_line+1):
bb.error("\t%.4d:%s" % (i, body[i-1]) )
def better_compile(text, file, realfile):
"""
A better compile method. This method
will print the offending lines.
"""
try:
return compile(text, file, "exec")
except Exception, e:
import bb,sys
# split the text into lines again
body = text.split('\n')
bb.error("Error in compiling: ", realfile)
bb.error("The lines resulting into this error were:")
bb.error("\t%d:%s:'%s'" % (e.lineno, e.__class__.__name__, body[e.lineno-1]))
_print_trace(body, e.lineno)
# exit now
sys.exit(1)
def better_exec(code, context, text, realfile):
"""
Similiar to better_compile, better_exec will
print the lines that are responsible for the
error.
"""
import bb,sys
try:
exec code in context
except:
(t,value,tb) = sys.exc_info()
if t in [bb.parse.SkipPackage, bb.build.FuncFailed]:
raise
# print the Header of the Error Message
bb.error("Error in executing: ", realfile)
bb.error("Exception:%s Message:%s" % (t,value) )
# let us find the line number now
while tb.tb_next:
tb = tb.tb_next
import traceback
line = traceback.tb_lineno(tb)
_print_trace( text.split('\n'), line )
raise
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