diff options
Diffstat (limited to 'lib')
-rw-r--r-- | lib/spack/spack/hooks/sbang.py | 43 |
1 files changed, 32 insertions, 11 deletions
diff --git a/lib/spack/spack/hooks/sbang.py b/lib/spack/spack/hooks/sbang.py index 3390ecea29..d78adb576e 100644 --- a/lib/spack/spack/hooks/sbang.py +++ b/lib/spack/spack/hooks/sbang.py @@ -35,7 +35,7 @@ import spack.modules shebang_limit = 127 def shebang_too_long(path): - """Detects whether an file has a shebang line that is too long.""" + """Detects whether a file has a shebang line that is too long.""" with open(path, 'r') as script: bytes = script.read(2) if bytes != '#!': @@ -47,14 +47,21 @@ def shebang_too_long(path): def filter_shebang(path): """Adds a second shebang line, using sbang, at the beginning of a file.""" + with open(path, 'r') as original_file: + original = original_file.read() + + # This line will be prepended to file + new_sbang_line = '#!/bin/bash %s/bin/sbang\n' % spack.spack_root + + # Skip files that are already using sbang. + if original.startswith(new_sbang_line): + return + backup = path + ".shebang.bak" os.rename(path, backup) - with open(backup, 'r') as bak_file: - original = bak_file.read() - with open(path, 'w') as new_file: - new_file.write('#!/bin/bash %s/bin/sbang\n' % spack.spack_root) + new_file.write(new_sbang_line) new_file.write(original) copy_mode(backup, path) @@ -63,15 +70,29 @@ def filter_shebang(path): tty.warn("Patched overly long shebang in %s" % path) +def filter_shebangs_in_directory(directory): + for file in os.listdir(directory): + path = os.path.join(directory, file) + + # only handle files + if not os.path.isfile(path): + continue + + # only handle links that resolve within THIS package's prefix. + if os.path.islink(path): + real_path = os.path.realpath(path) + if not real_path.startswith(directory + os.sep): + continue + + # test the file for a long shebang, and filter + if shebang_too_long(path): + filter_shebang(path) + + def post_install(pkg): """This hook edits scripts so that they call /bin/bash $spack_prefix/bin/sbang instead of something longer than the shebang limit.""" if not os.path.isdir(pkg.prefix.bin): return - - for file in os.listdir(pkg.prefix.bin): - path = os.path.join(pkg.prefix.bin, file) - if shebang_too_long(path): - filter_shebang(path) - + filter_shebangs_in_directory(pkg.prefix.bin) |