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Diffstat (limited to 'Build/source/texk/dvisvgm/dvisvgm-src/tests/genhashcheck.py')
-rwxr-xr-x | Build/source/texk/dvisvgm/dvisvgm-src/tests/genhashcheck.py | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/Build/source/texk/dvisvgm/dvisvgm-src/tests/genhashcheck.py b/Build/source/texk/dvisvgm/dvisvgm-src/tests/genhashcheck.py new file mode 100755 index 00000000000..bc93ef064f5 --- /dev/null +++ b/Build/source/texk/dvisvgm/dvisvgm-src/tests/genhashcheck.py @@ -0,0 +1,71 @@ +#!/usr/bin/python +# This file is part of the dvisvgm package and published under the +# terms of the GNU General Public License version 3 or later. +# See file COPYING for further details. +# Copyright (C) 2016-2017 Martin Gieseking <martin.gieseking@uos.de> + +import re +import sys + +def extract_hashes (fname): + with open(fname) as f: + lines = f.readlines() + found = False + for line in lines: + if ' hash2unicode = {{\n' in line: + found = True + elif found: + match = re.search(r'^\s*{(0x[0-9a-f]{8}),\s*0x[0-9a-f]{4}}, //\s*(.+)\s*$', line) + if match: + print '\t{%s, "%s"},' % (match.group(1), match.group(2)) + else: + found = False + +if (len(sys.argv) < 2): + sys.exit(1) + +print """\ +#include <xxhash.h> +#include <iomanip> +#include <iostream> +#include <string> + +using namespace std; + +struct NameHash { + unsigned hash; + string name; +} nameHashes[] = { +""" +extract_hashes(sys.argv[1]) +print """\ +}; + +int main () { + unsigned prev_hash=0; + size_t size = sizeof(nameHashes)/sizeof(NameHash); + if (size == 0) { + cout << "hash table is empty\\n"; + return 1; + } + for (unsigned i=0; i < size; i++) { + const string &name = nameHashes[i].name; + const unsigned hash = nameHashes[i].hash; + if (XXH32(&name[0], name.length(), 0) != hash) { + cout << "hash of '" << name << "' doesn't match\\n"; + return 1; + } + if (hash < prev_hash) { + cout << "misplaced hash value " << hex << setw(8) << setfill('0') << hash << "\\n"; + return 1; + } + if (hash == prev_hash) { + cout << "colliding hash values " << hex << setw(8) << setfill('0') << hash << "\\n"; + return 1; + } + prev_hash = hash; + } + cout << "hash check passed\\n"; + return 0; +} +""" |