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from git_taskrepo.testinfo import SemiStrictParser, ParserError
import string
import os
import commands

# Keys from testinfo to populate with
keys = ("runfor",
        "types",
        "bugs",
        )

class TaskRepoException(Exception):
    pass

class TRX(TaskRepoException):
    pass

class TRX_Parse(TRX):
    pass

class TRX_TestInfo(TRX):
    pass

def only_ascii(s):
    return filter(lambda x: x in string.printable, s)

def _delete_taskrepo(taskrepo, taskname):
    with taskrepo:
        cur = taskrepo.cursor()
        cur.execute("SELECT id FROM tasks WHERE name=?", (taskname,))
        result = cur.fetchone()
        if result:
            taskid = result[0]
            for key in keys:
                # Clear old values
                cur.execute("DELETE FROM %s WHERE task_id=?" % key, (taskid,))
            cur.execute("DELETE FROM tasks WHERE id=?", (taskid,))

def _update_taskrepo(taskrepo, taskname, testinfo):
    with taskrepo:
        cur = taskrepo.cursor()
        # Do we already have an entry for this task?
        cur.execute("SELECT id FROM tasks WHERE name=?", (taskname,))
        result = cur.fetchone()
        if result:
            taskid = result[0]
        else:
            cur.execute("INSERT INTO tasks(name) VALUES (?)", (taskname,))
            taskid = cur.lastrowid;

        # Update description and owner
        cur.execute("UPDATE tasks SET description = ?, owner = ? WHERE id = ? ",
                                         (only_ascii(testinfo.test_description),
                                          only_ascii(testinfo.owner),
                                          taskid))

        for key in keys:
            # Clear old values
            cur.execute("DELETE FROM %s WHERE task_id=?" % key, (taskid,))
            # Populate with new values
            for value in getattr(testinfo, key):
                cur.execute("INSERT INTO %s VALUES (?,?)" % key, (taskid, value))

def update_taskrepo(repo, taskrepo, taskpath):
    taskname = taskpath.split("%s/" % repo.working_tree_dir)[1]
    if os.path.isfile(os.path.join(taskpath, "Makefile")):
        os.system("make -ki -C %s testinfo.desc >/dev/null 2>&1" % taskpath)
    if os.path.isfile(os.path.join(taskpath, "testinfo.desc")):
        try:
            testinfo = parse_testinfo(os.path.join(taskpath, "testinfo.desc"))
        except ParserError:
            raise
        _update_taskrepo(taskrepo, taskname, testinfo)
    else:
        _delete_taskrepo(taskrepo, taskname)
        raise TRX_TestInfo('No testinfo.desc')

def parse_testinfo(filename):
    p = SemiStrictParser(True)
    p.parse(open(filename).readlines())
    return p.info