#
#   mem.py
#
#   Get instantaneous memory statistics (installed, total, free, available)
#

import re

from ..formatting import *
from .. import config

import logging
logger = logging.getLogger(__name__)

def parse_log():

    logger.debug("Starting memory section")
    section = Section("memory")
    
    table = Table()

    ram_b = os.sysconf('SC_PAGE_SIZE') * os.sysconf('SC_PHYS_PAGES')
    table.add_row(Row([Column("Installed"), Column(parsesize(ram_b))]))

    raw_mem = util.readlog(config.prefs['logs']['meminfo'])
    total_regex = re.compile("(MemTotal:\s*| kB)+")
    free_regex = re.compile("MemFree:\s*")

    for line in raw_mem.splitlines():
        matches = re.findall("^Mem(\w+):\s*(\d*)\s*kB$", line)
        if len(matches) > 0:
            logger.debug("Detected {0} memory of {1} kB".format(matches[0][0].lower(), matches[0][1]))
            table.add_row(Row([Column(matches[0][0]), Column(parsesize(float(matches[0][1])*1000))]))
#        if "Mem" in line:
#            total = line_regex.sub("", line, 1)
#            processor = proc_regex.sub("", processor)
#            if not processor in proc_data.items:
#                proc_data.items.append(processor)
#            else:
#                logger.debug("Found duplicate entry (perhaps multiple cores?) for {0}".format(processor))
#    if len(proc_data.items) > 0:
#        section.append_data(proc_data)
#    else:
#        logger.warning("Failed to find processor data")

    table.align_column(0, "right")
    section.append_table(table)

    logger.info("Finished memory section")
    return section