diff options
Diffstat (limited to 'other-licenses/7zstub/src/CS/7zip/Common/CommandLineParser.cs')
| -rw-r--r-- | other-licenses/7zstub/src/CS/7zip/Common/CommandLineParser.cs | 274 |
1 files changed, 274 insertions, 0 deletions
diff --git a/other-licenses/7zstub/src/CS/7zip/Common/CommandLineParser.cs b/other-licenses/7zstub/src/CS/7zip/Common/CommandLineParser.cs new file mode 100644 index 0000000000..b46f6f2095 --- /dev/null +++ b/other-licenses/7zstub/src/CS/7zip/Common/CommandLineParser.cs @@ -0,0 +1,274 @@ +// CommandLineParser.cs
+
+using System;
+using System.Collections;
+
+namespace SevenZip.CommandLineParser
+{
+ public enum SwitchType
+ {
+ Simple,
+ PostMinus,
+ LimitedPostString,
+ UnLimitedPostString,
+ PostChar
+ }
+
+ public class SwitchForm
+ {
+ public string IDString;
+ public SwitchType Type;
+ public bool Multi;
+ public int MinLen;
+ public int MaxLen;
+ public string PostCharSet;
+
+ public SwitchForm(string idString, SwitchType type, bool multi,
+ int minLen, int maxLen, string postCharSet)
+ {
+ IDString = idString;
+ Type = type;
+ Multi = multi;
+ MinLen = minLen;
+ MaxLen = maxLen;
+ PostCharSet = postCharSet;
+ }
+ public SwitchForm(string idString, SwitchType type, bool multi, int minLen):
+ this(idString, type, multi, minLen, 0, "")
+ {
+ }
+ public SwitchForm(string idString, SwitchType type, bool multi):
+ this(idString, type, multi, 0)
+ {
+ }
+ }
+
+ public class SwitchResult
+ {
+ public bool ThereIs;
+ public bool WithMinus;
+ public ArrayList PostStrings = new ArrayList();
+ public int PostCharIndex;
+ public SwitchResult()
+ {
+ ThereIs = false;
+ }
+ }
+
+ public class Parser
+ {
+ public ArrayList NonSwitchStrings = new ArrayList();
+ SwitchResult[] _switches;
+
+ public Parser(int numSwitches)
+ {
+ _switches = new SwitchResult[numSwitches];
+ for (int i = 0; i < numSwitches; i++)
+ _switches[i] = new SwitchResult();
+ }
+
+ bool ParseString(string srcString, SwitchForm[] switchForms)
+ {
+ int len = srcString.Length;
+ if (len == 0)
+ return false;
+ int pos = 0;
+ if (!IsItSwitchChar(srcString[pos]))
+ return false;
+ while (pos < len)
+ {
+ if (IsItSwitchChar(srcString[pos]))
+ pos++;
+ const int kNoLen = -1;
+ int matchedSwitchIndex = 0;
+ int maxLen = kNoLen;
+ for (int switchIndex = 0; switchIndex < _switches.Length; switchIndex++)
+ {
+ int switchLen = switchForms[switchIndex].IDString.Length;
+ if (switchLen <= maxLen || pos + switchLen > len)
+ continue;
+ if (String.Compare(switchForms[switchIndex].IDString, 0,
+ srcString, pos, switchLen, true) == 0)
+ {
+ matchedSwitchIndex = switchIndex;
+ maxLen = switchLen;
+ }
+ }
+ if (maxLen == kNoLen)
+ throw new Exception("maxLen == kNoLen");
+ SwitchResult matchedSwitch = _switches[matchedSwitchIndex];
+ SwitchForm switchForm = switchForms[matchedSwitchIndex];
+ if ((!switchForm.Multi) && matchedSwitch.ThereIs)
+ throw new Exception("switch must be single");
+ matchedSwitch.ThereIs = true;
+ pos += maxLen;
+ int tailSize = len - pos;
+ SwitchType type = switchForm.Type;
+ switch (type)
+ {
+ case SwitchType.PostMinus:
+ {
+ if (tailSize == 0)
+ matchedSwitch.WithMinus = false;
+ else
+ {
+ matchedSwitch.WithMinus = (srcString[pos] == kSwitchMinus);
+ if (matchedSwitch.WithMinus)
+ pos++;
+ }
+ break;
+ }
+ case SwitchType.PostChar:
+ {
+ if (tailSize < switchForm.MinLen)
+ throw new Exception("switch is not full");
+ string charSet = switchForm.PostCharSet;
+ const int kEmptyCharValue = -1;
+ if (tailSize == 0)
+ matchedSwitch.PostCharIndex = kEmptyCharValue;
+ else
+ {
+ int index = charSet.IndexOf(srcString[pos]);
+ if (index < 0)
+ matchedSwitch.PostCharIndex = kEmptyCharValue;
+ else
+ {
+ matchedSwitch.PostCharIndex = index;
+ pos++;
+ }
+ }
+ break;
+ }
+ case SwitchType.LimitedPostString:
+ case SwitchType.UnLimitedPostString:
+ {
+ int minLen = switchForm.MinLen;
+ if (tailSize < minLen)
+ throw new Exception("switch is not full");
+ if (type == SwitchType.UnLimitedPostString)
+ {
+ matchedSwitch.PostStrings.Add(srcString.Substring(pos));
+ return true;
+ }
+ String stringSwitch = srcString.Substring(pos, minLen);
+ pos += minLen;
+ for (int i = minLen; i < switchForm.MaxLen && pos < len; i++, pos++)
+ {
+ char c = srcString[pos];
+ if (IsItSwitchChar(c))
+ break;
+ stringSwitch += c;
+ }
+ matchedSwitch.PostStrings.Add(stringSwitch);
+ break;
+ }
+ }
+ }
+ return true;
+
+ }
+
+ public void ParseStrings(SwitchForm[] switchForms, string[] commandStrings)
+ {
+ int numCommandStrings = commandStrings.Length;
+ bool stopSwitch = false;
+ for (int i = 0; i < numCommandStrings; i++)
+ {
+ string s = commandStrings[i];
+ if (stopSwitch)
+ NonSwitchStrings.Add(s);
+ else
+ if (s == kStopSwitchParsing)
+ stopSwitch = true;
+ else
+ if (!ParseString(s, switchForms))
+ NonSwitchStrings.Add(s);
+ }
+ }
+
+ public SwitchResult this[int index] { get { return _switches[index]; } }
+
+ public static int ParseCommand(CommandForm[] commandForms, string commandString,
+ out string postString)
+ {
+ for (int i = 0; i < commandForms.Length; i++)
+ {
+ string id = commandForms[i].IDString;
+ if (commandForms[i].PostStringMode)
+ {
+ if (commandString.IndexOf(id) == 0)
+ {
+ postString = commandString.Substring(id.Length);
+ return i;
+ }
+ }
+ else
+ if (commandString == id)
+ {
+ postString = "";
+ return i;
+ }
+ }
+ postString = "";
+ return -1;
+ }
+
+ static bool ParseSubCharsCommand(int numForms, CommandSubCharsSet[] forms,
+ string commandString, ArrayList indices)
+ {
+ indices.Clear();
+ int numUsedChars = 0;
+ for (int i = 0; i < numForms; i++)
+ {
+ CommandSubCharsSet charsSet = forms[i];
+ int currentIndex = -1;
+ int len = charsSet.Chars.Length;
+ for (int j = 0; j < len; j++)
+ {
+ char c = charsSet.Chars[j];
+ int newIndex = commandString.IndexOf(c);
+ if (newIndex >= 0)
+ {
+ if (currentIndex >= 0)
+ return false;
+ if (commandString.IndexOf(c, newIndex + 1) >= 0)
+ return false;
+ currentIndex = j;
+ numUsedChars++;
+ }
+ }
+ if (currentIndex == -1 && !charsSet.EmptyAllowed)
+ return false;
+ indices.Add(currentIndex);
+ }
+ return (numUsedChars == commandString.Length);
+ }
+ const char kSwitchID1 = '-';
+ const char kSwitchID2 = '/';
+
+ const char kSwitchMinus = '-';
+ const string kStopSwitchParsing = "--";
+
+ static bool IsItSwitchChar(char c)
+ {
+ return (c == kSwitchID1 || c == kSwitchID2);
+ }
+ }
+
+ public class CommandForm
+ {
+ public string IDString = "";
+ public bool PostStringMode = false;
+ public CommandForm(string idString, bool postStringMode)
+ {
+ IDString = idString;
+ PostStringMode = postStringMode;
+ }
+ }
+
+ class CommandSubCharsSet
+ {
+ public string Chars = "";
+ public bool EmptyAllowed = false;
+ }
+}
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