1 files changed, 93 insertions, 0 deletions
diff --git a/support/json-rsync-version b/support/json-rsync-version
new file mode 100755
index 0000000..31fed7f
--- /dev/null
+++ b/support/json-rsync-version
@@ -0,0 +1,93 @@
+#!/usr/bin/python3
+
+import sys, argparse, subprocess, json
+
+TWEAK_NAME = {
+        'asm': 'asm_roll',
+        'ASM': 'asm_roll',
+        'hardlink_special': 'hardlink_specials',
+        'protect_args': 'secluded_args',
+        'protected_args': 'secluded_args',
+        'SIMD': 'SIMD_roll',
+    }
+
+MOVE_OPTIM = set('asm_roll SIMD_roll'.split())
+
+def main():
+    if not args.rsync or args.rsync == '-':
+        ver_out = sys.stdin.read().strip()
+    else:
+        ver_out = subprocess.check_output([args.rsync, '--version', '--version'], encoding='utf-8').strip()
+    if ver_out.startswith('{'):
+        print(ver_out)
+        return
+    info = { }
+    misplaced_optims = { }
+    for line in ver_out.splitlines():
+        if line.startswith('rsync '):
+            prog, vstr, ver, pstr, vstr2, proto = line.split()
+            info['program'] = prog
+            if ver.startswith('v'):
+                ver = ver[1:]
+            info[vstr] = ver
+            if '.' not in proto:
+                proto += '.0'
+            else:
+                proto = proto.replace('.PR', '.')
+            info[pstr] = proto
+        elif line.startswith('Copyright '):
+            info['copyright'] = line[10:]
+        elif line.startswith('Web site: '):
+            info['url'] = line[10:]
+        elif line.startswith('  '):
+            if not saw_comma and ',' in line:
+                saw_comma = True
+                info[sect_name] = { }
+            if saw_comma:
+                for x in line.strip(' ,').split(', '):
+                    if ' ' in x:
+                        val, var = x.split(' ', 1)
+                        if val == 'no':
+                            val = False
+                        elif val.endswith('-bit'):
+                            var = var[:-1] + '_bits'
+                            val = int(val.split('-')[0])
+                    else:
+                        var = x
+                        val = True
+                    var = var.replace(' ', '_').replace('-', '_')
+                    if var in TWEAK_NAME:
+                        var = TWEAK_NAME[var]
+                    if sect_name[0] != 'o' and var in MOVE_OPTIM:
+                        misplaced_optims[var] = val
+                    else:
+                        info[sect_name][var] = val
+            else:
+                info[sect_name] += [ x for x in line.split() if not x.startswith('(') ]
+        elif line == '':
+            break
+        else:
+            sect_name = line.strip(' :').replace(' ', '_').lower()
+            info[sect_name] = [ ]
+            saw_comma = False
+    for chk in 'capabilities optimizations'.split():
+        if chk not in info:
+            info[chk] = { }
+    if misplaced_optims:
+        info['optimizations'].update(misplaced_optims)
+    for chk in 'checksum_list compress_list daemon_auth_list'.split():
+        if chk not in info:
+            info[chk] = [ ]
+    info['license'] = 'GPLv3' if ver[0] == '3' else 'GPLv2'
+    info['caveat'] = 'rsync comes with ABSOLUTELY NO WARRANTY'
+    print(json.dumps(info))
+
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser(description="Output rsync's version data in JSON format, even if the rsync doesn't support a native json-output method.", add_help=False)
+    parser.add_argument('rsync', nargs='?', help="Specify an rsync command to run. Otherwise stdin is consumed.")
+    parser.add_argument("--help", "-h", action="help", help="Output this help message and exit.")
+    args = parser.parse_args()
+    main()
+
+# vim: sw=4 et