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[10324] Implement new basic functions for chat command parsing.
* Now can be used as quotes any strings with symbols ' " [] around. For example can be used: .additem [Tourch] or .additem "Tourch". And in similar cases wher before [] or "" only canbe used in commands. * New functions support propertly extraction shift-links as optional first args * Also added more safe functions for extraction int32/uint32/float values. For more wide use new functuons specialized extraction functions also need chnaged to same way work. This is goal for future work at this part code.
This commit is contained in:
VladimirMangos
parent
373f607a44
commit
edace1948e
7 changed files with 365 additions and 126 deletions
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@ -52,7 +52,7 @@
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// |color|Hitem:item_id:perm_ench_id:gem1:gem2:gem3:0:0:0:0:reporter_level|h[name]|h|r
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// - client, item icon shift click
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// |color|Hitemset:itemset_id|h[name]|h|r
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// |color|Hplayer:name|h[name]|h|r - client, in some messages, at click copy only name instead link
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// |color|Hplayer:name|h[name]|h|r - client, in some messages, at click copy only name instead link, so no way generate it in client string send to server
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// |color|Hquest:quest_id:quest_level|h[name]|h|r - client, quest list name shift-click
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// |color|Hskill:skill_id|h[name]|h|r
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// |color|Hspell:spell_id|h[name]|h|r - client, spellbook spell icon shift-click
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@ -2005,6 +2005,281 @@ Creature* ChatHandler::getSelectedCreature()
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return m_session->GetPlayer()->GetMap()->GetCreatureOrPetOrVehicle(m_session->GetPlayer()->GetSelection());
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}
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/**
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* Function skip all whitespaces in args string
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*
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* @param args variable pointer to non parsed args string, updated at function call to new position (with skipped white spaces)
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* allowed NULL string pointer stored in *args
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*/
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void ChatHandler::SkipWhiteSpaces(char** args)
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{
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if(!*args)
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return;
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while(isWhiteSpace(**args))
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++(*args);
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}
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/**
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* Function extract to val arg signed integer value or fail
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*
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* @param args variable pointer to non parsed args string, updated at function call to new position (with skipped white spaces)
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* @param val return extracted value if function success, in fail case original value unmodified
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* @return true if value extraction successful
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*/
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bool ChatHandler::ExtractInt32(char** args, int32& val)
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{
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if (!*args || !**args)
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return false;
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char* tail = *args;
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long valRaw = strtol(*args, &tail, 10);
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if (tail != *args && isWhiteSpace(*tail))
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*(tail++) = '\0';
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else if (tail && *tail) // some not whitespace symbol
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return false; // args not modified and can be re-parsed
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if (valRaw < std::numeric_limits<int32>::min() || valRaw > std::numeric_limits<int32>::max())
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return false;
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// value successfully extracted
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val = int32(valRaw);
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*args = tail;
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return true;
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}
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/**
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* Function extract to val arg unsigned integer value or fail
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*
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* @param args variable pointer to non parsed args string, updated at function call to new position (with skipped white spaces)
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* @param val return extracted value if function success, in fail case original value unmodified
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* @return true if value extraction successful
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*/
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bool ChatHandler::ExtractUInt32(char** args, uint32& val)
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{
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if (!*args || !**args)
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return false;
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char* tail = *args;
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unsigned long valRaw = strtoul(*args, &tail, 10);
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if (tail != *args && isWhiteSpace(*tail))
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*(tail++) = '\0';
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else if (tail && *tail) // some not whitespace symbol
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return false; // args not modified and can be re-parsed
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if (valRaw > std::numeric_limits<uint32>::max())
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return false;
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// value successfully extracted
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val = uint32(valRaw);
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*args = tail;
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return true;
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}
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/**
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* Function extract to val arg float value or fail
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*
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* @param args variable pointer to non parsed args string, updated at function call to new position (with skipped white spaces)
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* @param val return extracted value if function success, in fail case original value unmodified
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* @return true if value extraction successful
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*/
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bool ChatHandler::ExtractFloat(char** args, float& val)
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{
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if (!*args || !**args)
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return false;
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char* tail = *args;
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double valRaw = strtod(*args, &tail);
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if (tail != *args && isWhiteSpace(*tail))
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*(tail++) = '\0';
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else if (tail && *tail) // some not whitespace symbol
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return false; // args not modified and can be re-parsed
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// value successfully extracted
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val = float(valRaw);
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*args = tail;
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return true;
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}
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/**
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* Function extract name-like string (from non-numeric or special symbol until whitespace)
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*
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* @param args variable pointer to non parsed args string, updated at function call to new position (with skipped white spaces)
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* @return name-like string without whitespaces, or NULL if args empty or not appropriate content.
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*/
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char* ChatHandler::ExtractLiteralArg(char** args)
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{
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if (!*args || !**args)
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return NULL;
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if ((*args)[0] == '[' || (*args)[0] == '\'' || (*args)[0] == '"' || (*args)[0] == '|')
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return NULL;
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char* name = strtok(*args, " ");
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*args = strtok(NULL, "");
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return name;
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}
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/**
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* Function extract quote-like string (any characters guarded by some special character, in our cases ['")
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*
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* @param args variable pointer to non parsed args string, updated at function call to new position (with skipped white spaces)
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* @return quote-like string, or NULL if args empty or not appropriate content.
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*/
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char* ChatHandler::ExtractQuotedArg( char** args )
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{
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if (!*args || !**args)
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return NULL;
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if (**args != '\'' && **args != '"' && **args != '[')
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return NULL;
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char guard[2] = " "; // guard[1] == '\0'
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guard[0] = (*args)[0];
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if (guard[0] == '[')
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guard[0] = ']';
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char* str = strtok((*args)+1, guard); // skip start guard symbol
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*args = strtok(NULL, "");
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SkipWhiteSpaces(args);
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return str;
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}
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/**
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* Function extract shift-link-like string (any characters guarded by | and |h|r with some additional internal structure check)
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*
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* @param args variable pointer to non parsed args string, updated at function call to new position (with skipped white spaces)
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* @return shift-link-like string, or NULL if args empty or not appropriate content.
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*/
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char* ChatHandler::ExtractLinkArg( char** args )
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{
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if (!*args || !**args)
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return NULL;
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if (**args != '|')
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return NULL;
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// |color|Hkey:data|h[name]|h|r
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char* head = *args;
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char* tail = (*args)+1; // skip |
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while (*tail && *tail != '|') // skip color part
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++tail;
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if (!*tail)
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return NULL;
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// |Hkey:data|h[name]|h|r
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++tail; // skip |
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if (*tail != 'H')
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return NULL;
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while (*tail && (*tail != '|' || *(tail+1) != 'h')) // skip key/data part
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++tail;
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if (!*tail)
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return NULL;
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tail += 2;
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// [name]|h|r
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if (!*tail || *tail != '[')
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return NULL;
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while (*tail && (*tail != ']' || *(tail+1) != '|')) // skip name part
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++tail;
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tail += 2;
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// h|r
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if (!*tail || *tail != 'h' || *(tail+1) != '|')
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return NULL;
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tail += 2;
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// r
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if (!*tail || *tail != 'r' || *(tail+1) && !isWhiteSpace(*(tail+1)))
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return NULL;
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++tail;
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if (*tail)
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{
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*(tail++) = '\0';
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}
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*args = tail;
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SkipWhiteSpaces(args);
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return head;
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}
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/**
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* Function extract nmae/number/quote/shift-link-like string
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*
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* @param args variable pointer to non parsed args string, updated at function call to new position (with skipped white spaces)
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* @return extaractd arg string, or NULL if args empty or not appropriate content.
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*/
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char* ChatHandler::ExtractArg( char** args )
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{
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if (!*args || !**args)
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return NULL;
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switch (**args)
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{
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case '|' :
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return ExtractLinkArg(args);
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case '\'' : case '"' : case '[' :
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return ExtractQuotedArg(args);
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default:
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{
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char* name = strtok(*args, " ");
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*args = strtok(NULL, "");
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return name;
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}
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}
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}
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/**
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* Function extract name/quote/number/shift-link-like string, and return it if args have more non-whitespace data
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*
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* @param args variable pointer to non parsed args string, updated at function call to new position (with skipped white spaces)
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* if args gave only single arg then args still pointing to this arg (unmodified pointer)
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* @return extracted string, or NULL if args empty or not appropriate content or have single arg totally.
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*/
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char* ChatHandler::ExtractOptArg(char** args)
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{
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char* arg = ExtractArg(args);
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// have more data
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if (*args && **args)
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return arg;
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// optional name not found
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*args = arg;
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return NULL;
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}
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char* ChatHandler::extractKeyFromLink(char* text, char const* linkType, char** something1)
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{
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// skip empty
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@ -2584,40 +2859,6 @@ bool ChatHandler::extractPlayerTarget(char* args, Player** player, uint64* playe
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return true;
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}
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void ChatHandler::extractOptFirstArg(char* args, char** arg1, char** arg2)
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{
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char* p1 = strtok(args, " ");
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char* p2 = strtok(NULL, " ");
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if(!p2)
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{
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p2 = p1;
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p1 = NULL;
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}
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if(arg1)
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*arg1 = p1;
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if(arg2)
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*arg2 = p2;
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}
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char* ChatHandler::extractQuotedArg( char* args )
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{
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if(!*args)
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return NULL;
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if(*args=='"')
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return strtok(args+1, "\"");
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else
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{
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char* space = strtok(args, "\"");
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if(!space)
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return NULL;
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return strtok(NULL, "\"");
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}
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}
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uint32 ChatHandler::extractAccountId(char* args, std::string* accountName /*= NULL*/, Player** targetIfNullArg /*= NULL*/)
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{
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uint32 account_id = 0;
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