# ex:ts=4:sw=4:sts=4:et
# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-

import os, sys
import oe, oe.data

def getfields(line):
    fields = {}
    fieldmap = ( "pkg", "src", "dest", "type", "mode", "uid", "gid", "major", "minor", "start", "inc", "count" )
    for f in xrange(len(fieldmap)):
        fields[fieldmap[f]] = None

    if not line:
        return None

    splitline = line.split()
    if not len(splitline):
        return None

    try:
        for f in xrange(len(fieldmap)):
            if splitline[f] == '-':
                continue
            fields[fieldmap[f]] = splitline[f]
    except IndexError:
        pass
    return fields

def parse (mfile, d):
    manifest = []
    while 1:
        line = mfile.readline()
        if not line:
            break
        if line.startswith("#"):
            continue
        fields = getfields(line)
        if not fields:
            continue
        manifest.append(fields)
    return manifest

def emit (func, manifest, d):
#str = "%s () {\n" % func
    str = ""
    for line in manifest:
        emittedline = emit_line(func, line, d)
        if not emittedline:
            continue
        str += emittedline + "\n"
#       str += "}\n"
    return str

def mangle (func, line, d):
    import copy
    newline = copy.copy(line)
    src = oe.data.expand(newline["src"], d)

    if src:
        if not os.path.isabs(src):
            src = "${WORKDIR}/" + src

    dest = newline["dest"]
    if not dest:
        return

    if dest.startswith("/"):
        dest = dest[1:]

    if func is "do_install":
        dest = "${D}/" + dest

    elif func is "do_populate":
        dest = "${WORKDIR}/install/" + newline["pkg"] + "/" + dest

    elif func is "do_stage":
        varmap = {}
        varmap["${bindir}"] = "${STAGING_DIR}/${HOST_SYS}/bin"
        varmap["${libdir}"] = "${STAGING_DIR}/${HOST_SYS}/lib"
        varmap["${includedir}"] = "${STAGING_DIR}/${HOST_SYS}/include"
        varmap["${datadir}"] = "${STAGING_DATADIR}"

        matched = 0
        for key in varmap.keys():
            if dest.startswith(key):
                dest = varmap[key] + "/" + dest[len(key):]
                matched = 1
        if not matched:
            newline = None
            return
    else:
        newline = None
        return

    newline["src"] = src
    newline["dest"] = dest
    return newline

def emit_line (func, line, d):
    import copy
    newline = copy.deepcopy(line)
    newline = mangle(func, newline, d)
    if not newline:
        return None

    str = ""
    type = newline["type"]
    mode = newline["mode"]
    src = newline["src"]
    dest = newline["dest"]
    if type is "d":
        str = "install -d "
        if mode:
            str += "-m %s " % mode
        str += dest
    elif type is "f":
        if not src:
            return None
        if dest.endswith("/"):
            str = "install -d "
            str += dest + "\n"
            str += "install "
        else:
            str = "install -D "
        if mode:
            str += "-m %s " % mode
        str += src + " " + dest
    del newline
    return str