# Exit status is the # of errors in the import, up to the maximum exit status

# For outputting an XML file to a PostgreSQL database, use the general format of

import copy

import csv

import itertools

import os.path

import xml.dom.minidom as minidom

sys.path.append(os.path.dirname(__file__)+"/../lib")

import csvs

import db_xml

import exc

import iters

import maps

import opts

import parallelproc

import Parser

import profiling

import sql

import sql_gen

import streams

import strings

import term

import util

import xpath

import xml_dom

import xml_func

import xml_parse

def get_with_prefix(map_, prefixes, key):

    '''Gets all entries for the given key with any of the given prefixes

    values = []

    for key_ in strings.with_prefixes(['']+prefixes, key): # also with no prefix

        except KeyError, e: continue # keep going

        values.append((key_, value))

def metadata_value(name): return None # this feature has been removed

def cleanup(val):

    return util.none_if(strings.cleanup(strings.ustr(val)), u'', u'\\N')

def main_():

    env_names = []

        raise SystemExit('Usage: '+opts.env_usage(env_names, True)+' '

            +sys.argv[0]+' [map_path...] [<input] [>output]\n'

            'Note: Row #s start with 1')

    ## Get config from env vars

    # Modes

    test = opts.env_flag('test', False, env_names)

    commit = opts.env_flag('commit', False, env_names) and not test

        # never commit in test mode

    redo = opts.env_flag('redo', test, env_names) and not commit

    start = util.cast(int, opts.get_env_var('start', 1, env_names)) # 1-based

    if test: n_default = 1

    if end != None: end += start

    if test: default_verbosity = 0.5

    verbosity = util.cast(float, opts.get_env_var('verbosity',

    opts.get_env_var('profile_to', None, env_names) # add to env_names

    # DB

        return opts.get_env_vars(sql.db_config_names, prefix, env_names)

    in_db_config = get_db_config('in')

    in_schema = opts.get_env_var('in_schema', None, env_names)

    # Optimization

    cache_sql = opts.env_flag('cache_sql', True, env_names)

    by_col = in_db_config == out_db_config and opts.env_flag('by_col', False,

    else: cpus_default = 0 # or None to use parallel processing by default

    cpus = util.cast(int, util.none_if(opts.get_env_var('cpus', cpus_default,

    ##

    # Logging

    verbose_errors = test and verbosity > 0

    debug = verbosity > 1

    def log(msg, level=1):

        if level <= verbosity:

            if verbosity <= 2:

            sys.stderr.write(strings.to_raw_str(msg.rstrip('\n')+'\n'))

    if debug: log_debug = lambda msg, level=2: log(msg, level)

    else: log_debug = sql.log_debug_none

    # Parse args

    map_paths = sys.argv[1:]

    if map_paths == []:

    def connect_db(db_config):

        log('Connecting to '+sql.db_config_str(db_config))

        return sql.connect(db_config, caching=cache_sql,

            autocommit=verbosity > 2 and commit, log_debug=log_debug)

    if end != None: end_str = str(end-1) # end is one past the last #

    else: end_str = 'end'

    log('Processing input rows '+str(start)+'-'+end_str)

    ex_tracker = exc.ExPercentTracker(iter_text='row')

    # Parallel processing

    pool = parallelproc.MultiProducerPool(cpus)

    log('Using '+str(pool.process_ct)+' parallel CPUs')

    doc = xml_dom.create_doc()

    out_is_xml_ref = [False]

    in_label_ref = [None]

    # Define before the out_is_db section because it's used by by_col

    if out_is_db:

        rel_funcs = set(sql.tables(out_db, schema_like='%',

            table_like=r'\__%'))

    def process_input(root, row_ready, map_path):

        '''Inputs datasource to XML tree, mapping if needed'''

        out_is_xpaths = True

        out_label = None

            def split_col_name(name):

                label, sep, root = name.partition(':')

                    # extract datasrc from "datasrc[data_format]"

            in_label, in_root, prefixes = maps.col_info(in_label)

            in_label_ref[0] = in_label

            out_label, out_root = maps.col_info(out_label)[:2]

            if out_is_xpaths: has_types = out_root.find('/*s/') >= 0

                # outer elements are types

            for row in reader:

                if out != '': mappings.append([in_, out_root+out])

            stream.close()

        out_is_xml_ref[0] = out_is_xpaths and not out_is_db

        def process_rows(process_row, rows, rows_start=0):

            @param process_row(in_row, i)

            @rows_start The (0-based) row # of the first row in rows. Set this

            '''

            rows = iter(rows)

            i = -1

            for i in row_nums:

                try: row = rows.next()

                except StopIteration:

                if i < start: continue # not at start row yet

                # Row # is interally 0-based, but 1-based to the user

                process_row(row, i)

            row_ct = i-start+1

            return row_ct

        def map_rows(get_value, rows, **kw_args):

            '''Maps input rows

            # Prevent collisions if multiple inputs mapping to same output

            id_node = None

                    mappings[i] = [in_, nodes]

                if debug: # only calc if debug

                    log_debug('Put template:\n'+str(root))

            def process_row(row, i):

                row_id = str(i)

                if id_node != None: xml_dom.set_value(id_node, row_id)

                for in_, out in mappings:

                    log_debug('Getting '+str(in_))

                    value = metadata_value(in_)

                    if value == None: value = cleanup(get_value(in_, row))

                    if out_is_db: # out is list of XML nodes

                        xpath.put_obj(root, out, row_id, has_types, value)

            return process_rows(process_row, rows, **kw_args)

        def map_table(col_names, rows, **kw_args):

            col_names_ct = len(col_names)

            col_idxs = util.list_flip(col_names)

            # Resolve prefixes

            mappings_orig = mappings[:] # save a copy

                if metadata_value(in_) == None:

                    try: cols = get_with_prefix(col_idxs, prefixes, in_)

                    except KeyError: pass

                    else: mappings[len(mappings):] = [[db_xml.ColRef(*col), out]

            def get_value(in_, row): return row.list[in_.idx]

            def wrap_row(row):

            return map_rows(get_value, util.WrapIter(wrap_row, rows), **kw_args)

        if in_is_db:

            def on_error(e): ex_tracker.track(e)

            in_db = connect_db(in_db_config)

            # Get table and schema name

            table = sql_gen.Table(table, schema)

            # Fetch rows

            cur = sql.select(in_db, table, limit=limit, start=start,

            col_names = list(sql.col_names(cur))

            if by_col:

                map_table(col_names, []) # just create the template

                if n == None: # doing full import

                # Strip XML functions not in the DB

                special_funcs = db_xml.put_table_special_funcs | rel_funcs

                if debug: log_debug('Putting stripped:\n'+str(root))

                    # only calc if debug

                in_row_ct_ref = [0]

                db_xml.put_table(in_db, root.firstChild, table, commit,

                    in_row_ct_ref, row_ins_ct_ref, n, start, on_error)

                row_ct = in_row_ct_ref[0]

            else:

                row_ct = map_table(col_names, sql.rows(cur), rows_start=start)

            in_db.db.close()

        elif in_is_xml:

            stdin = streams.LineCountStream(sys.stdin)

            def get_rows(doc2rows):

                return iters.flatten(itertools.imap(doc2rows,

            if map_path == None:

                def doc2rows(in_xml_root):

                    iter_ = xml_dom.NodeElemIter(in_xml_root)

                    return iter_

            else:

                def doc2rows(in_xml_root):

                    rows = xpath.get(in_xml_root, in_root, limit=end)

                    if rows == []: raise SystemExit('Map error: Root "'

                row_ct = map_rows(get_value, get_rows(doc2rows))

        else: # input is CSV

            map_ = dict(mappings)

            reader, col_names = csvs.reader_and_header(sys.stdin)

            row_ct = map_table(col_names, reader)

    def process_inputs(root, row_ready):

        row_ct = 0

    pool.share_vars(locals())

    if out_is_db:

        try:

            if redo: sql.empty_db(out_db)

            pool.share_vars(locals())

            def row_ready(row_num, input_row):

                row_str_ = [None]

                def on_error(e):

                    exc.add_msg(e, row_str())

                    ex_tracker.track(e, row_num, detail=verbose_errors)

                pool.share_vars(locals())

                row_root = root.cloneNode(True) # deep copy so don't modify root

                xml_func.process(row_root, on_error, rel_funcs, out_db)

                if not xml_dom.is_empty(row_root):

                    try:

                        sql.with_savepoint(out_db,

                            lambda: db_xml.put(out_db, row_root.firstChild,

                                row_ins_ct_ref, on_error))

                        if commit: out_db.db.commit()

                    except sql.DatabaseErrors, e: on_error(e)

            row_ct = process_inputs(root, row_ready)

                ' new rows into database\n')

        finally:

            if out_db.connected():

    else:

        def on_error(e): ex_tracker.track(e)

        def row_ready(row_num, input_row): pass

        row_ct = process_inputs(root, row_ready)

        xml_func.process(root, on_error)

        if out_is_xml_ref[0]:

    # Consume any asynchronous tasks not already consumed above

    pool.main_loop()

    profiler.stop(row_ct)

    log('Processed '+str(row_ct)+' input rows')

    ex_tracker.exit()

def main():

    except Parser.SyntaxError, e: raise SystemExit(str(e))

if __name__ == '__main__':

    profile_to = opts.get_env_var('profile_to', None)

        sys.stderr.write('Profiling to '+profile_to+'\n')

        cProfile.run(main.func_code, profile_to)