import os, string, shutil

cvsroot = os.path.normpath('/cvsroot/cvsrepo/jsmith')
config_file = 'config'
config_tmplt = os.path.join('bin', config_file + '.template')
cnvr_root = 'cnvr_root'
chkpt_dir = 'checkpoints'
chkpt_file = 'checkpoint'
lines_file = 'lines'
p4root_live = os.path.normpath('/p4root')
depot_live = os.path.join(p4root_live, 'depot')
chkpt_live = os.path.join(p4root_live, chkpt_file)

mod_name = 'JSMITHCVSCONVERT_MODULE_NAME'
mod_p4root = 'JSMITHCVSCONVERT_P4ROOT'
mod_src = 'JSMITHCVSCONVERT_MODULE_DIR'
mod_out = 'JSMITHCVSCONVERT_IMPORT_DIR'
wantlines = 'JSMITHCVSCONVERT_WANTLINES'
wantedlines = 'JSMITHCVSCONVERT_WANTEDLINES'
conversion_tags = (mod_name, mod_src, mod_p4root, mod_out, wantlines, wantedlines)

def main():
    if not os.path.exists(cnvr_root):
        os.mkdir(cnvr_root)
        os.mkdir(chkpt_dir)
        os.mkdir(depot_live)
        cmd_tmplt = string.Template('perl bin\\$CMD "$MODPATH"')
        conversion_info = dict()
        for module in os.listdir(cvsroot):
##            if module != 'skel':
##                continue
            conversion_info[mod_name] = module
            mod_root = os.path.join(cnvr_root, module)
            conversion_info[mod_p4root] = os.path.join(mod_root, 'p4root')
            conversion_info[mod_src] = os.path.join(cvsroot, module).replace('\\', '/')
            conversion_info[mod_out] = '%s_CVS_IMPORT' % module
            conversion_info[wantlines] = '0'
            conversion_info[wantedlines] = ''
            line_list = os.path.join(mod_root, lines_file)
            mod_chkpt_src = os.path.join(conversion_info[mod_p4root], chkpt_file)
            mod_chkpt_out = ('%s.%s' % (os.path.join(chkpt_dir, chkpt_file), module)).replace(' ', '_')
            mod_depot_src = os.path.join(conversion_info[mod_p4root], 'depot', conversion_info[mod_out])
            mod_depot_out = os.path.join(depot_live, conversion_info[mod_out])
            
            os.mkdir(mod_root)
            create_config(mod_root, conversion_info)
            os.system(cmd_tmplt.substitute({'CMD': 'genmetadata', 'MODPATH': mod_root}))
            lines = list()
            for line in file(line_list):
                line = line.strip()
                if line in ('import', '===== Lines referenced:'):
                    continue
                lines.append(line)
            conversion_info[wantlines] = '1'
            conversion_info[wantedlines] = '\n'.join(lines)
            create_config(mod_root, conversion_info)
            for cmd in ('genmetadata', 'genchanges', 'dochanges', 'dolabels'):
                os.system(cmd_tmplt.substitute({'CMD': cmd, 'MODPATH': mod_root}))
            shutil.copy(mod_chkpt_src, mod_chkpt_out)
            shutil.move(mod_depot_src, mod_depot_out)
    os.chdir(chkpt_dir)
    os.system('..\\bin\\perfmerge2 --merge --output %s %s' % (chkpt_live, ' '.join(os.listdir(os.path.curdir))))
    os.chdir(p4root_live)
    os.system('p4d -jr ' + chkpt_file)
    
def create_config(modpath, cnvr_info):
    config = open(os.path.join(modpath, config_file), 'w')
    for line in file(config_tmplt):
        for (tag, val) in cnvr_info.iteritems():
            line = line.replace(tag, val)
        config.writelines(line)

if __name__ == '__main__':
    main()