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scribe.py
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scribe.py
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#!/usr/bin/python
# -*- coding: iso-8859-1 -*-
import json
import subprocess
import re
import getopt, sys, traceback
import os.path
import codecs
"""
This script parses files with the scribe syntax, transform them
into a single json file and then into mapfiles. Read the
README for more information on the scribe syntax.
Author : Charles-Éric Bourget
Updated: 21/06/2013
"""
def parseDict(data, scales, files, indentation):
for d in data:
dType = type(data[d])
if dType == type(dict()):
if isScale(d) == False:
parseDict(data[d], scales, files, indentation)
elif dType == type(list()):
parseList(d, data[d], scales, files, indentation)
elif dType == type(unicode()):
if d == "VARIABLE":
value = VAR[data[d]]
vType = type(value)
if vType == type(list()):
parseList(data[d], value, scales, files, indentation, False)
elif data[d][:9] == "VARIABLE:":
value = parseVariable(data[d][9:])
vType = type(value)
if vType == type(list()):
parseList(d, value, scales, files, indentation)
elif vType == type(unicode()):
write(d + " " + value, scales, files, indentation)
elif vType == type(int()):
write(d + " " + str(value), scales, files, indentation)
elif d == "VOID":
value = data[d]
write(comment(value.lstrip()), scales, files, indentation)
else:
value = data[d]
vType = type(value)
if vType == type(list()):
if isScaleList(value):
maxScale = maximumScale(scales)
minScale = minimumScale(scales)
parseScaleList(d, value, files, minScale, maxScale, indentation)
else:
if isScale(d) == False:
write(d + " " + value, scales, files, indentation)
elif dType == type(int()):
value = str(data[d])
if isScale(value) == False:
write(d + " " + value, scales, files, indentation)
def parseList(d, data, scales, files, indentation, close=True):
if (closeTag(data) == True and isScale(d) == False and isScaleList(data) == False and d != "VARIABLE" and close == True):
write(d, scales, files, indentation)
indentation = addIndentation(indentation, INDENTATION)
if (isScaleList(data) == True and close == True):
maxScale = maximumScale(scales)
minScale = minimumScale(scales)
parseScaleList(d, data, files, minScale, maxScale, indentation, close)
else:
for item in data:
dType = type(item)
if dType == type(dict()):
for i in item:
if isScale(i):
maxScale = maximumScale(scales)
minScale = minimumScale(scales)
parseScale(i, item[i], files, minScale, maxScale, indentation)
else:
parseDict(item, scales, files, indentation)
if (closeTag(data) == True and isScale(d) == False and isScaleList(data) == False and close == True):
indentation = substractIndentation(indentation, INDENTATION)
write("END", scales, files, indentation)
def parseScaleList(d, data, files, minScale, maxScale, indentation, close=True):
for item in data:
for scale in item:
scales = scaleToScaleList(scale, minScale, maxScale)
if scale == "VARIABLE":
key = item[scale]
value = VAR[key]
elif item[scale][:9] == "VARIABLE:":
key = scale
value = parseVariable(item[scale][9:])
else:
key = scale
value = item[key]
vType = type(value)
if vType == type(dict()):
write(d, scales, files, indentation)
parseDict(value, scales, files, indentation)
elif vType == type(list()):
write(d, scales, files, indentation)
indentation = addIndentation(indentation, INDENTATION)
parseList(key, value, scales, files, indentation)
elif vType == type(unicode()):
write(d + " " + value, scales, files, indentation)
elif vType == type(int()):
write(d + " " + str(value), scales, files, indentation)
if closeTag(data) == True:
indentation = substractIndentation(indentation, INDENTATION)
write("END", scales, files, indentation)
def parseScale(scale, data, files, minScale, maxScale, indentation):
scales = scaleToScaleList(scale, minScale, maxScale)
for d in data:
for item in d:
if item == "VARIABLE":
key = item
value = VAR[d[item]]
elif len(item) > 1:
if d[item][:9] == "VARIABLE:":
key = item
value = parseVariable(d[item][9:])
else:
key = item
value = d[key]
else:
key = item
value = d[key]
vType = type(value)
if vType == type(dict()):
write(item, scales, files, indentation)
parseDict(value, scales, files, indentation)
elif vType == type(list()):
parseList(key, value, scales, files, indentation)
elif vType == type(unicode()):
write(item + " " + value, scales, files, indentation)
elif vType == type(int()):
write(item + " " + str(value), scales, files, indentation)
def parseVariable(value):
var = VAR[value]
if var[:9] == "VARIABLE:":
var = parseVariable(var[9:])
return var
def scaleToScaleList(scale, minScale, maxScale):
scales = {}
if re.match(r"[0-9]{1,2}\-{1}[0-9]{1,2}", scale):
s1 = int(re.search('(?<!\-)\w+', scale).group(0))
s2 = int(re.search('(?<=\-)\w+', scale).group(0))
for i in range(s1, s2 + 1):
if (i >= minScale) and (i <= maxScale):
scales[str(i)] = SCALES[str(i)]
elif re.match(r"[0-9]+", scale):
if (int(scale) >= minScale) and (int(scale) <= maxScale):
scales[scale] = SCALES[scale]
return scales
def isScale(string):
if re.match(r"[0-9]+(\:[0-9]+)*", string):
return True
else:
return False
def isScaleList(data):
scale = False
for value in data:
for d in value:
if isScale(d) == True:
scale = True
else:
return False
return scale
def closeTag(data):
close = True
for d in data:
for item in d:
if (isScale(item) == True and type(d[item]) != type(list())):
close = False
else:
close = True
return close
def maximumScale(scales):
maxScale = 0
for scale in scales:
if int(scale) > maxScale:
maxScale = int(scale)
return maxScale
def minimumScale(scales):
minScale = 99
for scale in scales:
if int(scale) < minScale:
minScale = int(scale)
return minScale
def addIndentation(string, n):
for i in range (0, n):
string += " "
return string
def substractIndentation(string, n):
n = -n
return string[:n]
def write(string, scales, files, indentation):
for value in scales:
if re.match(r"LAYER", string, re.IGNORECASE):
files[value].write(indentation + string + "\n")
indentation = addIndentation(indentation, INDENTATION)
if value == str(minimumScale(SCALES)):
files[value].write(indentation + "MAXSCALEDENOM 999999999" + "\n")
else:
files[value].write(indentation + "MAXSCALEDENOM " + str(SCALES[str(int(value) -1)]) + "\n")
files[value].write(indentation + "MINSCALEDENOM " + str(scales[value]) + "\n")
indentation = substractIndentation(indentation, INDENTATION)
elif re.match(r"^(NAME|MASK)", string, re.IGNORECASE):
text = string
text = re.sub(r"'$", value + "'", text)
text = re.sub(r"\"$", value + "\"", text)
files[value].write(indentation + text + "\n")
else:
files[value].write(indentation + string + "\n")
def comment(string):
return re.sub(r"##", "#", string)
def openLayerFiles(directory, scales):
layerFiles = {}
for value in scales:
layerfile = codecs.open(directory + "level" + value + ".map", encoding='utf-8', mode='w+')
layerFiles[value] = layerfile
return layerFiles
def openMapFile(directory, name):
mapFile = codecs.open(directory + name + ".map", encoding='utf-8', mode="w+")
return {"1": mapFile}
def closeFiles(files):
for value in files:
files[value].close()
def jsonToMap(content, outputDirectory, mapName, clean):
global MAP, LAYERS, VAR, SCALES
data = json.loads(content)
MAP = data["MAP"]
LAYERS = data["LAYERS"]
VAR = list2dict(data["VARIABLES"])
SCALES = list2dict(data["SCALES"])
indentation = addIndentation("", INDENTATION)
layerFiles = openLayerFiles(outputDirectory, SCALES)
parseList("", LAYERS, SCALES, layerFiles, indentation, False)
closeFiles(layerFiles)
mapFile = openMapFile(outputDirectory, mapName)
parseList("MAP", MAP, {"1": None}, mapFile, "")
mapFile["1"].seek(-4, 2)
for value in range(1, len(SCALES) + 1):
if clean == True:
write("INCLUDE 'level" + str(value) + ".map'", {"1": None}, mapFile, "")
else:
layerfile = codecs.open(outputDirectory + "level" + str(value) + ".map", encoding='utf-8', mode='r')
write("#---- LEVEL " + str(value) + " ----#", {"1": None}, mapFile, "")
write(layerfile.read(), {"1": None}, mapFile, "")
closeFiles(layerfile)
write("END", {"1": None}, mapFile, "")
closeFiles(mapFile)
def string2json(string):
#Remove the comments preceded by //
t = re.sub(ur'("(?:\\.|[^"\\])*"|\'(?:\\.|[^\'\\])*\'|(?:[^/\n"\']|/[^/*\n"\'])+|\n)|(/\* (?:[^*]|\*[^/])*\*/)|(?://(.*)$)$', lambda m: m.group(1), string, flags=re.MULTILINE)
#Remove the comments between /* and */
t = re.sub(r"/\*.*?\t*?\*/", "", t, flags=re.DOTALL)
#Find and replace the comments preceded by ##
comments = re.findall(r"\#\#.*", t, flags=0)
t = re.sub(r"\#\#.*", "VOID:FLAGCOMMENT\n", t, flags=0)
#Remove tabs
t = re.sub(r"\t", " ", t)
#Replace @ with VARIABLE:
t = re.sub(r"@", "VARIABLE:", t)
#Find and replace the text between {{ and }} (useful for blocks like PROJECTION, METADATA, PATTERN etc.)
texts = re.findall(r"(?<=\{\{).*?\t*?(?=\}\})", t, flags=re.DOTALL)
t = re.sub(r"\{\{.*?\t*?\}\}", "{\nVOID:FLAGTEXT\n}", t, flags=re.DOTALL)
#t = re.sub(r"(?<=\{{).*?\t*?(?=\}})", "\n{VOID:FLAGTEXT}\n", t, flags=re.DOTALL)
#Find and replace values for the parameters (preceded by :)
values = re.findall(r"(?<=:).+", t)
t = re.sub(r"(?<=:).+", "FLAGVALUE", t)
#Find and the parameters (followed by :)
params = re.findall(r"\n*\s*[\w0-9\-]+\s*(?=[:\{])", t)
t = re.sub(r"[\w0-9\-]+\s*(?=[:\{])", "FLAGPARAM", t)
#Replace { and } with [ and ]
t = re.sub(r"\{", "[", t)
t = re.sub(r"\}", "]", t)
#Replace [ with :[
t = re.sub(r"(?<!\()\s*\[", ":[", t)
#Replace : with ":
t = re.sub(r":\s*", "\":", t)
#Replace : with :"
t = re.sub(r"\s*:(?=\w)", ":\"", t)
#Replace spaces followed by an alphanumeric chracter with {"
t = re.sub(r"\s(?=\w)", "{\"", t)
#Replace line break with \""},\n
t = re.sub(r"\"[\s\n]+", "\\\"\"},\n", t)
#Replace spaces preceded by alphabetic characters or _ with "},\n
t = re.sub(r"(?<=[a-zA-Z_])\s", "\"},\n", t)
#Replace , followed by a ine break and ] with ]
t = re.sub(r",\s+\n*\]", "]", t)
#Replace ] not preceded by and alphanumeric chracter with ]}
t = re.sub(r"(?<!\w)\]", "]}", t)
#Substitute the FLAGVALUE with the corresponding values
for i in range (0, len(values)):
value = re.sub(r"\"", re.escape("\\") + "\"", values[i].strip())
t = re.sub(r"FLAGVALUE", value, t, 1)
#Substitute the FLAGPARAM with the corresponding values
for i in range (0, len(params)):
param = re.sub(r"\"", re.escape("\\") + "\"", params[i].strip())
t = re.sub(r"FLAGPARAM", param, t, 1)
#Substitute the FLAGTEXT with "}{"VOID:":" and the corresponding texts
for i in range (0, len(texts)):
text = re.sub(r"\"", re.escape("\\") + "\"", texts[i].strip())
text = re.sub(r"\n", "\"}{\"VOID\":\"", text)
t = re.sub(r"FLAGTEXT", text, t, 1)
#Substitute the FLAGCOMMENT with the corresponding comment blocks. Each line of the comment block is preceded with ##
for i in range (0, len(comments)):
comment = re.sub(r"\"", re.escape("\\") + "\"", comments[i].strip())
t = re.sub(r"FLAGCOMMENT", comment, t, 1)
#Make the JSON valid with some {},[]. SCALES has to be the first element in the file to be converted into a JSON.
t = re.sub(r"\}\s*\n*\{", "},{", t)
t = re.sub(r"\}\n*\s*\]\},\{\"LAYERS\"", "}],\"LAYERS\"", t)
t = re.sub(r"\}\n*\s*\]\},\{\"MAP\"", "}],\"MAP\"", t)
t = re.sub(r"\}\n*\s*\]\},\{\"VARIABLES\"", "}],\"VARIABLES\"", t)
t = re.sub(r"^\s*\n*{\"", "", t)
#Add {" before scale levels tag
t = re.sub(r"\s(?=([0-9]|[0-9]{2})+\":)", "{\"", t)
#Add {" at the beginning of the string and return a valid JSON string
return ("{\"" + t)
def validateInput(scales, variables, map, groups):
items = [scales, variables, map] + groups
correct = True
for item in items:
(errors, line_errors) = validateSyntax(content=item["content"], name=item["name"], variables=variables["content"])
if len(errors) > 0 or len(line_errors) > 0:
correct = False
for error in errors:
print >> sys.stderr, error
for line in sorted(line_errors.iterkeys()):
for error in line_errors[line]:
print >> sys.stderr, error["text"]
print >> sys.stderr, error["value"]
return correct
def validateSyntax(content, name, variables=None):
lines = content.split("\n")
line_errors = {}
errors = []
#Remove the comments preceded by //
uncommented_string = re.sub(r"//.*", "", content)
#Remove the comments between /* and */
uncommented_string = re.sub(r"/\*.*?\t*?\*/", "", uncommented_string, flags=re.DOTALL)
#Find and replace the comments preceded by ##
uncommented_string = re.sub(r"\#\#.*", "", uncommented_string, flags=0)
#Remove the the plain text between {{}}
no_plain_text_string = re.sub(r"\{\{.*?\t*?\}\}", "{}", uncommented_string, flags=re.DOTALL)
#Unmatching brackets
test_string = re.sub(r"(?<=:)\s*(\"|\'|\/)+.*(\"|\'|\/)+", "FLAG:", uncommented_string)
if not(matchingBrackets(test_string)):
errors.append("Error : Brackets mismatch in file " + name)
if len(errors) == 0:
#Missing ":"
#Remove the values preceded with :
test_string = re.sub(r"(?<=:).+", "FLAG:", no_plain_text_string)
missing_dots = re.findall(r"([\w\-]+\s+(?!\:)[\w\"\'\[\/@\-\.#=]{1}.*?\n)+?", test_string)
for value in list(set(missing_dots)):
value = value.strip()
for index, line in enumerate(lines):
line = line.strip()
if re.search(value, line):
str_line_number = str(index + 1)
if not str_line_number in line_errors:
line_errors[str_line_number] = []
line_errors[str_line_number].append({
"text": "Error : Missing ':' in file " + name + " on line " + str_line_number + " :",
"value": line
})
#Unexpected ":"
unexpected_dots = re.findall(r"(\:\s*\{|\{\s*\:)", no_plain_text_string)
unexpected_dots += re.findall(r"\w+\s*\:\s*\n+\s*\{", no_plain_text_string)
for value in list(set(unexpected_dots)):
value = value.strip()
for index, line in enumerate(lines):
line = line.strip()
if re.search(value, line):
str_line_number = str(index + 1)
if not str_line_number in line_errors:
line_errors[str_line_number] = []
line_errors[str_line_number].append({
"text": "Error : Unexpected ':' in file " + name + " on line " + str_line_number + " :",
"value": line
})
unexpected_dots2 = re.findall(r"\w+\s*\:\s*\n+\s*\{", no_plain_text_string)
for value in list(set(unexpected_dots2)):
value = value.split("\n")[0].strip()
for index, line in enumerate(lines):
line = line.strip()
if re.search(value, line):
str_line_number = str(index + 1)
if not str_line_number in line_errors:
line_errors[str_line_number] = []
line_errors[str_line_number].append({
"text": "Error : Unexpected ':' in file " + name + " on line " + str_line_number + " :",
"value": line
})
#Unexpected plain text
test_string = re.sub(r"epsg\:", "epsg$", no_plain_text_string, flags=re.IGNORECASE)
no_plain_text_lines = test_string.split("\n")
for no_plain_text_line in no_plain_text_lines:
no_plain_text_line = no_plain_text_line.strip()
if no_plain_text_line != "" and (not(re.search(r"(\:|\{|\}|@)", no_plain_text_line)) and re.search(r"^(\"|\'|[0-9]).+(\"|\'|[0-9])$", no_plain_text_line)):
for index, line in enumerate(lines):
line = line.strip()
no_plain_text_line = re.sub(r"epsg\$", "epsg:", no_plain_text_line, flags=re.IGNORECASE)
if re.search(no_plain_text_line, line, flags=re.IGNORECASE):
str_line_number = str(index + 1)
if not str_line_number in line_errors:
line_errors[str_line_number] = []
line_errors[str_line_number].append({
"text": "Error : Malformed text in file " + name + " on line " + str_line_number + \
". Consider using double brackets {{ }} :",
"value": line
})
unexpected_plain_text = re.findall(r"(\:\s*\{|\{\s*\:)", no_plain_text_string)
#Call to undefined variable
vars = re.findall(r"(?<=@).+", uncommented_string)
for var in vars:
var_re = re.compile("(?<!\w)" + var + "\s*(\:|\{)+")
#var_re = re.compile(var)
if not(var_re.search(variables)):
for index, line in enumerate(lines):
line = line.strip()
if re.search(var, line):
str_line_number = str(index + 1)
if not str_line_number in line_errors:
line_errors[str_line_number] = []
line_errors[str_line_number].append({
"text": "Error : Call to undefined variable in file " + name + " on line " + str_line_number + " :",
"value": line
})
return (errors, line_errors)
def matchingBrackets(string):
iparens = iter('{}')
parens = dict(zip(iparens, iparens))
closing = parens.values()
line = 1
stack = []
for c in string:
d = parens.get(c, None)
if d:
stack.append(d)
elif c in closing:
if not stack or c != stack.pop():
return False
return not stack
def list2dict(ls):
dc = {}
for item in ls:
for key in item:
dc[key] = item[key]
return dc
def debugMapfile(outputDirectory, mapName, level):
sub = subprocess.Popen('shp2img -m ' + outputDirectory + mapName + '.map -all_debug ' + str(level) + ' -o ' + outputDirectory + ' debug.png', shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
logs = 'Mapserver logs (debug level ' + str(level) + ')\n'
logs += '------------------------------\n'
logs += sub.stderr.read().strip() + sub.stdout.read().strip()
print >> sys.stdout, logs
return
def main():
global INDENTATION
INDENTATION = 4
inputDirectory = "./"
outputDirectory = "./result/"
mapName = "result"
configFile = "config"
clean = False
error = ""
outputJSONFile = None
debugLevel = -1
try:
opts, args = getopt.getopt(sys.argv[1:], "i:o:n:cf:t:j:d:", ["input", "output", "name", "clean", "file","tabulation", "json", "debug"])
except getopt.GetoptError as err:
print >> sys.stderr, str(err)
sys.exit(2)
for opt, arg in opts:
if opt in ("-i", "--input"):
inputDirectory = arg
elif opt in ('-o', "--ouput"):
outputDirectory = arg
elif opt in ("-n", "--name"):
mapName = arg
elif opt in ("-c", "--clean"):
clean = True
elif opt in ("-f", "--file"):
configFile = arg
elif opt in ("-t", "--tabulation"):
INDENTATION = int(arg)
elif opt in ("-j", "--json"):
outputJSONFile = arg
elif opt in ("-d", "--debug"):
debugLevel = int(arg)
if os.path.isfile(inputDirectory + "scales"):
inputScalesFile = codecs.open(inputDirectory + "scales", encoding='utf-8')
inputScalesContent = inputScalesFile.read()
scales = {"name": inputDirectory + "scales", "content": inputScalesContent}
inputScalesFile.close()
else:
error += "File 'scales' not found.\n"
if os.path.isfile(inputDirectory + "variables"):
inputVariablesFile = codecs.open(inputDirectory + "variables", encoding='utf-8')
inputVariablesContent = inputVariablesFile.read()
variables = {"name": inputDirectory + "variables", "content": inputVariablesContent}
inputVariablesFile.close()
else:
error += "File 'variables' not found.\n"
if os.path.isfile(inputDirectory + "map"):
inputMapFile = codecs.open(inputDirectory + "map", encoding='utf-8')
inputMapContent = inputMapFile.read()
map = {"name": inputDirectory + "map", "content": inputMapContent}
inputMapFile.close()
else:
error += "File 'map' not found.\n"
if os.path.isfile(configFile):
inputConfigFile = codecs.open(configFile, encoding='utf8')
inputConfigContent = inputConfigFile.read()
inputConfigFile.close()
jsonConfig = json.loads(string2json(inputConfigContent))
inputLayersContent = "LAYERS {\n"
groupFiles = [""] * (len(jsonConfig["ORDER"]) + 1)
groups= []
for i in range(0, len(jsonConfig["ORDER"])):
for j in jsonConfig["ORDER"][i]:
if jsonConfig["ORDER"][i][j][:1] == "/":
layerFilePath = jsonConfig["ORDER"][i][j]
else:
layerFilePath = inputDirectory + jsonConfig["ORDER"][i][j]
if (os.path.isfile(layerFilePath)):
if (int(j) > 0 and int(j) <= len(jsonConfig["ORDER"])):
groupFiles[int(j)] = layerFilePath
else:
error += "Index " + j + " out of bounds in config file.\n"
else:
error += "File '" + layerFilePath + "' not found.\n"
for i in range(0, len(groupFiles)):
if (os.path.isfile(groupFiles[i])):
inputLayerFile = codecs.open(groupFiles[i], encoding='utf8')
inputLayerContent = inputLayerFile.read()
inputLayersContent += inputLayerContent + "\n"
groups.append({"name": groupFiles[i], "content": inputLayerContent})
inputLayerFile.close()
inputLayersContent += "\n}"
else:
error += "Config file not found.\n"
if (error == ""):
jsonInput = inputScalesContent + "\n" + inputVariablesContent + "\n" + inputMapContent + "\n" + inputLayersContent
correct = validateInput(scales=scales, variables=variables, map=map, groups=groups)
if correct == True:
jsonContent = string2json(jsonInput)
if outputJSONFile is not None:
jFile = codecs.open(outputJSONFile, encoding='utf-8', mode="w+")
jFile.write(jsonContent.encode('utf-8'))
try:
jsonToMap(jsonContent, outputDirectory, mapName, clean)
if debugLevel >= 0 and debugLevel <= 5: #debug using shp2img
debugMapfile(outputDirectory, mapName, debugLevel)
except ValueError:
exc_traceback = sys.exc_info()[2]
print >> sys.stderr, "Uncatched syntax error :"
traceback.print_exc(exc_traceback)
else:
print >> sys.stderr, error
sys.exit(2)
if __name__ == "__main__":
main()