llvm-project/lldb/tools/lldb-mi/MICmdArgValString.cpp

399 lines
14 KiB
C++

//===-- MICmdArgValString.cpp -----------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// In-house headers:
#include "MICmdArgValString.h"
#include "MICmdArgContext.h"
//++
//------------------------------------------------------------------------------------
// Details: CMICmdArgValString constructor.
// Type: Method.
// Args: None.
// Return: None.
// Throws: None.
//--
CMICmdArgValString::CMICmdArgValString()
: m_bHandleQuotedString(false), m_bAcceptNumbers(false),
m_bHandleDirPaths(false), m_bHandleAnything(false) {}
//++
//------------------------------------------------------------------------------------
// Details: CMICmdArgValString constructor.
// Type: Method.
// Args: vbAnything - (R) True = Parse a string and accept anything, false =
// do not accept anything.
// Return: None.
// Throws: None.
//--
CMICmdArgValString::CMICmdArgValString(const bool vbAnything)
: m_bHandleQuotedString(vbAnything ? true : false), m_bAcceptNumbers(false),
m_bHandleDirPaths(false), m_bHandleAnything(vbAnything) {}
//++
//------------------------------------------------------------------------------------
// Details: CMICmdArgValString constructor.
// Type: Method.
// Args: vbHandleQuotes - (R) True = Parse a string surrounded by quotes
// spaces are not delimiters, false = only text up to
// next delimiting space character.
// vbAcceptNumbers - (R) True = Parse a string and accept as a
// number if number, false = numbers not recognised
// as string types.
// vbHandleDirPaths - (R) True = Parse a string and accept as a file
// path if a path, false = file paths are not
// recognised as string types.
// Return: None.
// Throws: None.
//--
CMICmdArgValString::CMICmdArgValString(const bool vbHandleQuotes,
const bool vbAcceptNumbers,
const bool vbHandleDirPaths)
: m_bHandleQuotedString(vbHandleQuotes), m_bAcceptNumbers(vbAcceptNumbers),
m_bHandleDirPaths(vbHandleDirPaths), m_bHandleAnything(false) {}
//++
//------------------------------------------------------------------------------------
// Details: CMICmdArgValString constructor.
// Type: Method.
// Args: vrArgName - (R) Argument's name to search by.
// vbMandatory - (R) True = Yes must be present, false = optional
// argument.
// vbHandleByCmd - (R) True = Command processes *this option, false =
// not handled.
// vbHandleQuotes - (R) True = Parse a string surrounded by quotes
// spaces are not delimiters, false = only text up to
// next delimiting space character. (Dflt = false)
// vbAcceptNumbers - (R) True = Parse a string and accept as a number
// if number, false = numbers not recognised as
// string types. (Dflt = false)
// Return: None.
// Throws: None.
//--
CMICmdArgValString::CMICmdArgValString(const CMIUtilString &vrArgName,
const bool vbMandatory,
const bool vbHandleByCmd,
const bool vbHandleQuotes /* = false */,
const bool vbAcceptNumbers /* = false */)
: CMICmdArgValBaseTemplate(vrArgName, vbMandatory, vbHandleByCmd),
m_bHandleQuotedString(vbHandleQuotes), m_bAcceptNumbers(vbAcceptNumbers),
m_bHandleDirPaths(false), m_bHandleAnything(false) {}
//++
//------------------------------------------------------------------------------------
// Details: CMICmdArgValString constructor.
// Type: Method.
// Args: vrArgName - (R) Argument's name to search by.
// vbMandatory - (R) True = Yes must be present, false = optional
// argument.
// vbHandleByCmd - (R) True = Command processes *this option, false =
// not handled.
// vbHandleQuotes - (R) True = Parse a string surrounded by quotes
// spaces are not delimiters, false = only text up to
// next delimiting space character.
// vbAcceptNumbers - (R) True = Parse a string and accept as a number
// if number, false = numbers not recognised as
// vbHandleDirPaths - (R) True = Parse a string and accept as a file
// path if a path, false = file paths are not
// string types.
// Return: None.
// Throws: None.
//--
CMICmdArgValString::CMICmdArgValString(const CMIUtilString &vrArgName,
const bool vbMandatory,
const bool vbHandleByCmd,
const bool vbHandleQuotes,
const bool vbAcceptNumbers,
const bool vbHandleDirPaths)
: CMICmdArgValBaseTemplate(vrArgName, vbMandatory, vbHandleByCmd),
m_bHandleQuotedString(vbHandleQuotes), m_bAcceptNumbers(vbAcceptNumbers),
m_bHandleDirPaths(vbHandleDirPaths), m_bHandleAnything(false) {}
//++
//------------------------------------------------------------------------------------
// Details: CMICmdArgValString destructor.
// Type: Overridden.
// Args: None.
// Return: None.
// Throws: None.
//--
CMICmdArgValString::~CMICmdArgValString() {}
//++
//------------------------------------------------------------------------------------
// Details: Parse the command's argument options string and try to extract the
// value *this
// argument is looking for.
// Type: Overridden.
// Args: vrwArgContext - (RW) The command's argument options string.
// Return: MIstatus::success - Functional succeeded.
// MIstatus::failure - Functional failed.
// Throws: None.
//--
bool CMICmdArgValString::Validate(CMICmdArgContext &vrwArgContext) {
if (vrwArgContext.IsEmpty())
return m_bMandatory ? MIstatus::failure : MIstatus::success;
if (m_bHandleQuotedString)
return ValidateQuotedText(vrwArgContext);
return ValidateSingleText(vrwArgContext);
}
//++
//------------------------------------------------------------------------------------
// Details: Parse the command's argument options string and try to extract only
// the next
// word delimited by the next space.
// Type: Method.
// Args: vrwArgContext - (RW) The command's argument options string.
// Return: MIstatus::success - Functional succeeded.
// MIstatus::failure - Functional failed.
// Throws: None.
//--
bool CMICmdArgValString::ValidateSingleText(CMICmdArgContext &vrwArgContext) {
const CMIUtilString::VecString_t vecOptions(vrwArgContext.GetArgs());
CMIUtilString::VecString_t::const_iterator it = vecOptions.begin();
while (it != vecOptions.end()) {
const CMIUtilString &rArg(*it);
if (IsStringArg(rArg)) {
m_bFound = true;
if (vrwArgContext.RemoveArg(rArg)) {
m_bValid = true;
m_argValue = rArg.StripSlashes();
return MIstatus::success;
} else
return MIstatus::failure;
}
// Next
++it;
}
return MIstatus::failure;
}
//++
//------------------------------------------------------------------------------------
// Details: Parse the command's argument options string and try to extract all
// the words
// between quotes then delimited by the next space.
// Type: Method.
// Args: vrwArgContext - (RW) The command's argument options string.
// Return: MIstatus::success - Functional succeeded.
// MIstatus::failure - Functional failed.
// Throws: None.
//--
bool CMICmdArgValString::ValidateQuotedText(CMICmdArgContext &vrwArgContext) {
const CMIUtilString::VecString_t vecOptions(vrwArgContext.GetArgs());
if (vecOptions.size() == 0)
return MIstatus::failure;
const CMIUtilString &rArg(vecOptions[0]);
if (!IsStringArg(rArg))
return MIstatus::failure;
m_bFound = true;
if (vrwArgContext.RemoveArg(rArg)) {
m_bValid = true;
const char cQuote = '"';
m_argValue = rArg.Trim(cQuote).StripSlashes();
return MIstatus::success;
}
return MIstatus::failure;
}
//++
//------------------------------------------------------------------------------------
// Details: Examine the string and determine if it is a valid string type
// argument.
// Type: Method.
// Args: vrTxt - (R) Some text.
// Return: bool - True = yes valid arg, false = no.
// Throws: None.
//--
bool CMICmdArgValString::IsStringArg(const CMIUtilString &vrTxt) const {
if (m_bHandleQuotedString)
return (IsStringArgQuotedText(vrTxt) ||
IsStringArgQuotedTextEmbedded(vrTxt) ||
IsStringArgQuotedQuotedTextEmbedded(vrTxt) ||
IsStringArgSingleText(
vrTxt)); // Still test for this as could just be one word still
return IsStringArgSingleText(vrTxt);
}
//++
//------------------------------------------------------------------------------------
// Details: Examine the string and determine if it is a valid string type
// argument or
// option value. If the string looks like a long option, short option,
// a thread
// group ID or just a number it is rejected as a string type value.
// There is an
// option to allow the string to accept a number as a string type.
// Type: Method.
// Args: vrTxt - (R) Some text.
// Return: bool - True = yes valid argument value, false = something else.
// Throws: None.
//--
bool CMICmdArgValString::IsStringArgSingleText(
const CMIUtilString &vrTxt) const {
if (!m_bHandleDirPaths) {
// Look for directory file paths, if found reject
const bool bHavePosSlash = (vrTxt.find('/') != std::string::npos);
const bool bHaveBckSlash = (vrTxt.find('\\') != std::string::npos);
if (bHavePosSlash || bHaveBckSlash)
return false;
}
// Look for --someLongOption, if found reject
if (0 == vrTxt.find("--"))
return false;
// Look for -f type short options, if found reject
if ((0 == vrTxt.find('-')) && (vrTxt.length() == 2))
return false;
// Look for thread group i1 i2 i3...., if found reject
if ((vrTxt.find('i') == 0) && ::isdigit(vrTxt[1]))
return false;
// Look for numbers, if found reject
if (!m_bAcceptNumbers && vrTxt.IsNumber())
return false;
return true;
}
//++
//------------------------------------------------------------------------------------
// Details: Examine the string and determine if it is a valid string type
// argument.
// Take into account quotes surrounding the text. Note this function
// falls
// through to IsStringArgSingleText() should the criteria match fail.
// Type: Method.
// Args: vrTxt - (R) Some text.
// Return: bool - True = yes valid arg, false = no.
// Throws: None.
//--
bool CMICmdArgValString::IsStringArgQuotedText(
const CMIUtilString &vrTxt) const {
// Accept anything as string word
if (m_bHandleAnything)
return true;
// CODETAG_QUOTEDTEXT_SIMILAR_CODE
const char cQuote = '"';
const size_t nPos = vrTxt.find(cQuote);
if (nPos == std::string::npos)
return false;
// Is one and only quote at end of the string
if (nPos == (vrTxt.length() - 1))
return false;
// Quote must be the first character in the string or be preceded by a space
// Also check for embedded string formating quote
const char cBckSlash = '\\';
const char cSpace = ' ';
if ((nPos > 1) && (vrTxt[nPos - 1] == cBckSlash) &&
(vrTxt[nPos - 2] != cSpace)) {
return false;
}
if ((nPos > 0) && (vrTxt[nPos - 1] != cSpace))
return false;
// Need to find the other quote
const size_t nPos2 = vrTxt.rfind(cQuote);
if (nPos2 == std::string::npos)
return false;
// Make sure not same quote, need two quotes
if (nPos == nPos2)
return MIstatus::failure;
return true;
}
//++
//------------------------------------------------------------------------------------
// Details: Examine the string and determine if it is a valid string type
// argument.
// Take into account quotes surrounding the text. Take into account
// string format
// embedded quotes surrounding the text i.e. "\\\"%5d\\\"". Note this
// function falls
// through to IsStringArgQuotedText() should the criteria match fail.
// Type: Method.
// Args: vrTxt - (R) Some text.
// Return: bool - True = yes valid arg, false = no.
// Throws: None.
//--
bool CMICmdArgValString::IsStringArgQuotedTextEmbedded(
const CMIUtilString &vrTxt) const {
// CODETAG_QUOTEDTEXT_SIMILAR_CODE
const char cBckSlash = '\\';
const size_t nPos = vrTxt.find(cBckSlash);
if (nPos == std::string::npos)
return false;
// Slash must be the first character in the string or be preceded by a space
const char cSpace = ' ';
if ((nPos > 0) && (vrTxt[nPos - 1] != cSpace))
return false;
// Need to find the other matching slash
const size_t nPos2 = vrTxt.rfind(cBckSlash);
if (nPos2 == std::string::npos)
return false;
// Make sure not same back slash, need two slashes
if (nPos == nPos2)
return MIstatus::failure;
return false;
}
//++
//------------------------------------------------------------------------------------
// Details: Examine the string and determine if it is a valid string type
// argument.
// Take into account quotes surrounding the text. Take into account
// string format
// embedded quotes surrounding the text i.e. "\\\"%5d\\\"". Note this
// function falls
// through to IsStringArgQuotedTextEmbedded() should the criteria match
// fail.
// Type: Method.
// Args: vrTxt - (R) Some text.
// Return: bool - True = yes valid arg, false = no.
// Throws: None.
//--
bool CMICmdArgValString::IsStringArgQuotedQuotedTextEmbedded(
const CMIUtilString &vrTxt) const {
const size_t nPos = vrTxt.find("\"\\\"");
if (nPos == std::string::npos)
return false;
const size_t nPos2 = vrTxt.rfind("\\\"\"");
if (nPos2 == std::string::npos)
return false;
const size_t nLen = vrTxt.length();
if ((nLen > 5) && ((nPos + 2) == (nPos2 - 2)))
return false;
return true;
}