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| | # Program Information |
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| | PROGNAME = "tconfpy" |
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| | RCSID = "$Id: tconfpy.py,v 1.121 2004/03/19 11:03:33 tundra Exp $" |
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| | RCSID = "$Id: tconfpy.py,v 1.122 2004/03/19 22:41:17 tundra Exp $" |
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| | VERSION = RCSID.split()[2] |
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| | |
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| | # Copyright Information |
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| | |
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| |
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| | eERROR = "ERROR" |
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| | |
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| | eIFBAD = "'%s' Or '%s' Missing" % (EQUIV, NOTEQUIV) |
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| | eNOVARREF = "Must Have At Least One Variable Reference" |
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| | eSTARTUP = "<Program Starting>" |
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| | |
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| | # Messages |
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| | |
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| | Messages["eBADCOND"] = FILENUM + "Bad '%s' Directive. %s" |
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| | Messages["eBADSYNTAX"] = FILENUM + "Syntax Error. Statement Not In Known Form" |
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| | Messages["eCONFOPEN"] = "Cannot Open The File '%s'" |
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| | Messages["eCONFOPEN"] = FILENUM + "Cannot Open The File '%s'" |
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| | Messages["eENDIFEXTRA"] = FILENUM + "'" + ENDIF + "' Without Matching Condition" |
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| | Messages["eENDIFMISS"] = FILENUM + "Missing %d '" + ENDIF + "' Statement(s)" |
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| | Messages["eEQUIVEXTRA"] = FILENUM + "Only a single '%s' Or '%s' Operator Permitted" % (EQUIV, NOTEQUIV) |
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| | Messages["eVARUNDEF"] = FILENUM + "Attempt To Reference Undefined Variable '%s'" |
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| | |
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| | |
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| | ########### |
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| |
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| | SymTable[sym] = symtbl[sym] |
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| | |
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| | # Parse the file |
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| | |
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| | ParseFile(cfgfile) |
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| | ParseFile(cfgfile, eSTARTUP, 0) |
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| | |
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| | # Return the parsing results |
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| | |
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| | if DEBUG: |
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| |
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| | ########## |
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| | # Parse A File |
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| | ########## |
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| | |
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| | def ParseFile(cfgfile): |
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| | def ParseFile(cfgfile, current_cfg, current_linenum): |
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| | |
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| | global IgnoreCase, MsgList, SymTable, TotalLines |
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| | |
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| | try: |
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| | |
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| | cf = open(cfgfile) |
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| | |
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| | # Successful open of config file - Begin processing it |
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| | |
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| | linenum=0 |
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| | |
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| | # Process and massage the configuration file |
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| | for line in cf.read().splitlines(): |
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| |
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| | |
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| | # File open failed for some reason |
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| | except: |
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| | |
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| | ErrorMsg("eCONFOPEN", (cfgfile,)) # Record the error |
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| | ErrorMsg("eCONFOPEN", (current_cfg, current_linenum, cfgfile)) # Record the error |
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| | |
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| | # Make sure we had all condition blocks balanced with matching '.endif' |
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| | |
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| | finalcond = len(CondStack) |
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| |
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| | line, ref_ok = DerefVar(line.split(INCLUDE)[1].strip(), cfgfile, linenum) |
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| | |
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| | # Only attempt the include if all the variable dereferencing was successful |
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| | if ref_ok: |
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| | ParseFile(line) |
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| | ParseFile(line, cfgfile, linenum) |
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| | |
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| | ##### |
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| | # Conditional Processing |
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| |
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| | # Force parse state to False on an error |
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| | condstate = False |
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| | |
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| | ##### |
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| | # (In)Equality Conditionals - IF string ==/!= string forms |
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| | # (In)Equality Conditionals - IF string EQUIV/NOTEQUIV string forms |
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| | ##### |
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| | |
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| | else: |
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| | line = line.split(IF)[1].strip() |
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| | |
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| | # Handle Equality Form: ".IF string == string" |
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| | if EQUIV in line: |
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| | pass |
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| | |
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| | # Handle InEquality Form: "IF string != string" |
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| | elif NOTEQUIV in line: |
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| | pass |
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| | |
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| | if EQUIV in line or NOTEQUIV in line: |
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| | |
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| | # Only one operator permitted |
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| | if (line.count(EQUIV) + line.count(NOTEQUIV)) > 1: |
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| | ErrorMsg("eEQUIVEXTRA", (cfgfile, linenum)) |
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| | condstate = False |
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| | |
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| | else: |
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| | |
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| | # Dereference all variables |
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| | line, ref_ok = DerefVar(line, cfgfile, linenum) |
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| | |
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| | # Reference to undefined variables forces False |
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| | if not ref_ok: |
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| | condstate = False |
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| | |
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| | # So does a failure of the equality test itself |
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| | else: |
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| | invert = False |
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| | operator = EQUIV |
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| | condstate = True |
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| | |
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| | if operator not in line: # Must be NOTEQUIV |
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| | invert = True |
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| | operator = NOTEQUIV |
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| | |
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| | line = line.split(operator) |
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| | |
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| | if line[0].strip() != line[1].strip(): |
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| | condstate = False |
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| | |
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| | if invert: |
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| | condstate = not condstate |
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| | |
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| | |
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| | # Conditional Syntax Error |
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| | else: |
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| | ErrorMsg("eBADCOND", (cfgfile, linenum, FIRSTTOK, eIFBAD)) |
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tundra
authored
on 19 Mar 2004