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Diffstat (limited to 'src/qcommon/cvar.c')
| -rw-r--r-- | src/qcommon/cvar.c | 947 |
1 files changed, 947 insertions, 0 deletions
diff --git a/src/qcommon/cvar.c b/src/qcommon/cvar.c new file mode 100644 index 0000000..91d3dfb --- /dev/null +++ b/src/qcommon/cvar.c @@ -0,0 +1,947 @@ +/* +=========================================================================== +Copyright (C) 1999-2005 Id Software, Inc. +Copyright (C) 2000-2006 Tim Angus + +This file is part of Tremulous. + +Tremulous is free software; you can redistribute it +and/or modify it under the terms of the GNU General Public License as +published by the Free Software Foundation; either version 2 of the License, +or (at your option) any later version. + +Tremulous is distributed in the hope that it will be +useful, but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with Tremulous; if not, write to the Free Software +Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +=========================================================================== +*/ +// cvar.c -- dynamic variable tracking + +#include "q_shared.h" +#include "qcommon.h" + +cvar_t *cvar_vars; +cvar_t *cvar_cheats; +int cvar_modifiedFlags; + +#define MAX_CVARS 1024 +cvar_t cvar_indexes[MAX_CVARS]; +int cvar_numIndexes; + +#define FILE_HASH_SIZE 256 +static cvar_t* hashTable[FILE_HASH_SIZE]; + +cvar_t *Cvar_Set2( const char *var_name, const char *value, qboolean force); + +/* +================ +return a hash value for the filename +================ +*/ +static long generateHashValue( const char *fname ) { + int i; + long hash; + char letter; + + hash = 0; + i = 0; + while (fname[i] != '\0') { + letter = tolower(fname[i]); + hash+=(long)(letter)*(i+119); + i++; + } + hash &= (FILE_HASH_SIZE-1); + return hash; +} + +/* +============ +Cvar_ValidateString +============ +*/ +static qboolean Cvar_ValidateString( const char *s ) { + if ( !s ) { + return qfalse; + } + if ( strchr( s, '\\' ) ) { + return qfalse; + } + if ( strchr( s, '\"' ) ) { + return qfalse; + } + if ( strchr( s, ';' ) ) { + return qfalse; + } + return qtrue; +} + +/* +============ +Cvar_FindVar +============ +*/ +static cvar_t *Cvar_FindVar( const char *var_name ) { + cvar_t *var; + long hash; + + hash = generateHashValue(var_name); + + for (var=hashTable[hash] ; var ; var=var->hashNext) { + if (!Q_stricmp(var_name, var->name)) { + return var; + } + } + + return NULL; +} + +/* +============ +Cvar_VariableValue +============ +*/ +float Cvar_VariableValue( const char *var_name ) { + cvar_t *var; + + var = Cvar_FindVar (var_name); + if (!var) + return 0; + return var->value; +} + + +/* +============ +Cvar_VariableIntegerValue +============ +*/ +int Cvar_VariableIntegerValue( const char *var_name ) { + cvar_t *var; + + var = Cvar_FindVar (var_name); + if (!var) + return 0; + return var->integer; +} + + +/* +============ +Cvar_VariableString +============ +*/ +char *Cvar_VariableString( const char *var_name ) { + cvar_t *var; + + var = Cvar_FindVar (var_name); + if (!var) + return ""; + return var->string; +} + + +/* +============ +Cvar_VariableStringBuffer +============ +*/ +void Cvar_VariableStringBuffer( const char *var_name, char *buffer, int bufsize ) { + cvar_t *var; + + var = Cvar_FindVar (var_name); + if (!var) { + *buffer = 0; + } + else { + Q_strncpyz( buffer, var->string, bufsize ); + } +} + +/* +============ +Cvar_Flags +============ +*/ +int Cvar_Flags(const char *var_name) +{ + cvar_t *var; + + if(! (var = Cvar_FindVar(var_name)) ) + return CVAR_NONEXISTENT; + else + return var->flags; +} + +/* +============ +Cvar_CommandCompletion +============ +*/ +void Cvar_CommandCompletion( void(*callback)(const char *s) ) { + cvar_t *cvar; + + for ( cvar = cvar_vars ; cvar ; cvar = cvar->next ) { + callback( cvar->name ); + } +} + + +/* +============ +Cvar_Get + +If the variable already exists, the value will not be set unless CVAR_ROM +The flags will be or'ed in if the variable exists. +============ +*/ +cvar_t *Cvar_Get( const char *var_name, const char *var_value, int flags ) { + cvar_t *var; + long hash; + + if ( !var_name || ! var_value ) { + Com_Error( ERR_FATAL, "Cvar_Get: NULL parameter" ); + } + + if ( !Cvar_ValidateString( var_name ) ) { + Com_Printf("invalid cvar name string: %s\n", var_name ); + var_name = "BADNAME"; + } + +#if 0 // FIXME: values with backslash happen + if ( !Cvar_ValidateString( var_value ) ) { + Com_Printf("invalid cvar value string: %s\n", var_value ); + var_value = "BADVALUE"; + } +#endif + + var = Cvar_FindVar (var_name); + if ( var ) { + // if the C code is now specifying a variable that the user already + // set a value for, take the new value as the reset value + if ( ( var->flags & CVAR_USER_CREATED ) && !( flags & CVAR_USER_CREATED ) + && var_value[0] ) { + var->flags &= ~CVAR_USER_CREATED; + Z_Free( var->resetString ); + var->resetString = CopyString( var_value ); + + // ZOID--needs to be set so that cvars the game sets as + // SERVERINFO get sent to clients + cvar_modifiedFlags |= flags; + } + + var->flags |= flags; + // only allow one non-empty reset string without a warning + if ( !var->resetString[0] ) { + // we don't have a reset string yet + Z_Free( var->resetString ); + var->resetString = CopyString( var_value ); + } else if ( var_value[0] && strcmp( var->resetString, var_value ) ) { + Com_DPrintf( "Warning: cvar \"%s\" given initial values: \"%s\" and \"%s\"\n", + var_name, var->resetString, var_value ); + } + // if we have a latched string, take that value now + if ( var->latchedString ) { + char *s; + + s = var->latchedString; + var->latchedString = NULL; // otherwise cvar_set2 would free it + Cvar_Set2( var_name, s, qtrue ); + Z_Free( s ); + } + +// use a CVAR_SET for rom sets, get won't override +#if 0 + // CVAR_ROM always overrides + if ( flags & CVAR_ROM ) { + Cvar_Set2( var_name, var_value, qtrue ); + } +#endif + return var; + } + + // + // allocate a new cvar + // + if ( cvar_numIndexes >= MAX_CVARS ) { + Com_Error( ERR_FATAL, "MAX_CVARS" ); + } + var = &cvar_indexes[cvar_numIndexes]; + cvar_numIndexes++; + var->name = CopyString (var_name); + var->string = CopyString (var_value); + var->modified = qtrue; + var->modificationCount = 1; + var->value = atof (var->string); + var->integer = atoi(var->string); + var->resetString = CopyString( var_value ); + + // link the variable in + var->next = cvar_vars; + cvar_vars = var; + + var->flags = flags; + + hash = generateHashValue(var_name); + var->hashNext = hashTable[hash]; + hashTable[hash] = var; + + return var; +} + +/* +============ +Cvar_Set2 +============ +*/ +cvar_t *Cvar_Set2( const char *var_name, const char *value, qboolean force ) { + cvar_t *var; + +// Com_DPrintf( "Cvar_Set2: %s %s\n", var_name, value ); + + if ( !Cvar_ValidateString( var_name ) ) { + Com_Printf("invalid cvar name string: %s\n", var_name ); + var_name = "BADNAME"; + } + +#if 0 // FIXME + if ( value && !Cvar_ValidateString( value ) ) { + Com_Printf("invalid cvar value string: %s\n", value ); + var_value = "BADVALUE"; + } +#endif + + var = Cvar_FindVar (var_name); + if (!var) { + if ( !value ) { + return NULL; + } + // create it + if ( !force ) { + return Cvar_Get( var_name, value, CVAR_USER_CREATED ); + } else { + return Cvar_Get (var_name, value, 0); + } + } + + if (!value ) { + value = var->resetString; + } + + if((var->flags & CVAR_LATCH) && var->latchedString) { + if(!strcmp(value,var->latchedString)) + return var; + } + else if (!strcmp(value,var->string)) { + return var; + } + // note what types of cvars have been modified (userinfo, archive, serverinfo, systeminfo) + cvar_modifiedFlags |= var->flags; + + if (!force) + { + if (var->flags & CVAR_ROM) + { + Com_Printf ("%s is read only.\n", var_name); + return var; + } + + if (var->flags & CVAR_INIT) + { + Com_Printf ("%s is write protected.\n", var_name); + return var; + } + + if (var->flags & CVAR_LATCH) + { + if (var->latchedString) + { + if (strcmp(value, var->latchedString) == 0) + return var; + Z_Free (var->latchedString); + } + else + { + if (strcmp(value, var->string) == 0) + return var; + } + + Com_Printf ("%s will be changed upon restarting.\n", var_name); + var->latchedString = CopyString(value); + var->modified = qtrue; + var->modificationCount++; + return var; + } + + if ( (var->flags & CVAR_CHEAT) && !cvar_cheats->integer ) + { + Com_Printf ("%s is cheat protected.\n", var_name); + return var; + } + + } + else + { + if (var->latchedString) + { + Z_Free (var->latchedString); + var->latchedString = NULL; + } + } + + if (!strcmp(value, var->string)) + return var; // not changed + + var->modified = qtrue; + var->modificationCount++; + + Z_Free (var->string); // free the old value string + + var->string = CopyString(value); + var->value = atof (var->string); + var->integer = atoi (var->string); + + return var; +} + +/* +============ +Cvar_Set +============ +*/ +void Cvar_Set( const char *var_name, const char *value) { + Cvar_Set2 (var_name, value, qtrue); +} + +/* +============ +Cvar_SetLatched +============ +*/ +void Cvar_SetLatched( const char *var_name, const char *value) { + Cvar_Set2 (var_name, value, qfalse); +} + +/* +============ +Cvar_SetValue +============ +*/ +void Cvar_SetValue( const char *var_name, float value) { + char val[32]; + + if ( value == (int)value ) { + Com_sprintf (val, sizeof(val), "%i",(int)value); + } else { + Com_sprintf (val, sizeof(val), "%f",value); + } + Cvar_Set (var_name, val); +} + + +/* +============ +Cvar_Reset +============ +*/ +void Cvar_Reset( const char *var_name ) { + Cvar_Set2( var_name, NULL, qfalse ); +} + +/* +============ +Cvar_ForceReset +============ +*/ +void Cvar_ForceReset(const char *var_name) +{ + Cvar_Set2(var_name, NULL, qtrue); +} + +/* +============ +Cvar_SetCheatState + +Any testing variables will be reset to the safe values +============ +*/ +void Cvar_SetCheatState( void ) { + cvar_t *var; + + // set all default vars to the safe value + for ( var = cvar_vars ; var ; var = var->next ) { + if ( var->flags & CVAR_CHEAT ) { + // the CVAR_LATCHED|CVAR_CHEAT vars might escape the reset here + // because of a different var->latchedString + if (var->latchedString) + { + Z_Free(var->latchedString); + var->latchedString = NULL; + } + if (strcmp(var->resetString,var->string)) { + Cvar_Set( var->name, var->resetString ); + } + } + } +} + +/* +============ +Cvar_Command + +Handles variable inspection and changing from the console +============ +*/ +qboolean Cvar_Command( void ) { + cvar_t *v; + char string[ TRUNCATE_LENGTH ]; + char resetString[ TRUNCATE_LENGTH ]; + char latchedString[ TRUNCATE_LENGTH ]; + + // check variables + v = Cvar_FindVar (Cmd_Argv(0)); + if (!v) { + return qfalse; + } + + // perform a variable print or set + if ( Cmd_Argc() == 1 ) { + Com_TruncateLongString( string, v->string ); + Com_TruncateLongString( resetString, v->resetString ); + Com_Printf ("\"%s\" is:\"%s" S_COLOR_WHITE "\" default:\"%s" S_COLOR_WHITE "\"\n", + v->name, string, resetString ); + if ( v->latchedString ) { + Com_TruncateLongString( latchedString, v->latchedString ); + Com_Printf( "latched: \"%s\"\n", latchedString ); + } + return qtrue; + } + + // set the value if forcing isn't required + Cvar_Set2 (v->name, Cmd_Argv(1), qfalse); + return qtrue; +} + + +/* +============ +Cvar_Toggle_f + +Toggles a cvar for easy single key binding +============ +*/ +void Cvar_Toggle_f( void ) { + int v; + + if ( Cmd_Argc() != 2 ) { + Com_Printf ("usage: toggle <variable>\n"); + return; + } + + v = Cvar_VariableValue( Cmd_Argv( 1 ) ); + v = !v; + + Cvar_Set2 (Cmd_Argv(1), va("%i", v), qfalse); +} + +/* +============ +Cvar_Set_f + +Allows setting and defining of arbitrary cvars from console, even if they +weren't declared in C code. +============ +*/ +void Cvar_Set_f( void ) { + int i, c, l, len; + char combined[MAX_STRING_TOKENS]; + + c = Cmd_Argc(); + if ( c < 3 ) { + Com_Printf ("usage: set <variable> <value>\n"); + return; + } + + combined[0] = 0; + l = 0; + for ( i = 2 ; i < c ; i++ ) { + len = strlen ( Cmd_Argv( i ) + 1 ); + if ( l + len >= MAX_STRING_TOKENS - 2 ) { + break; + } + strcat( combined, Cmd_Argv( i ) ); + if ( i != c-1 ) { + strcat( combined, " " ); + } + l += len; + } + Cvar_Set2 (Cmd_Argv(1), combined, qfalse); +} + +/* +============ +Cvar_SetU_f + +As Cvar_Set, but also flags it as userinfo +============ +*/ +void Cvar_SetU_f( void ) { + cvar_t *v; + + if ( Cmd_Argc() != 3 ) { + Com_Printf ("usage: setu <variable> <value>\n"); + return; + } + Cvar_Set_f(); + v = Cvar_FindVar( Cmd_Argv( 1 ) ); + if ( !v ) { + return; + } + v->flags |= CVAR_USERINFO; +} + +/* +============ +Cvar_SetS_f + +As Cvar_Set, but also flags it as userinfo +============ +*/ +void Cvar_SetS_f( void ) { + cvar_t *v; + + if ( Cmd_Argc() != 3 ) { + Com_Printf ("usage: sets <variable> <value>\n"); + return; + } + Cvar_Set_f(); + v = Cvar_FindVar( Cmd_Argv( 1 ) ); + if ( !v ) { + return; + } + v->flags |= CVAR_SERVERINFO; +} + +/* +============ +Cvar_SetA_f + +As Cvar_Set, but also flags it as archived +============ +*/ +void Cvar_SetA_f( void ) { + cvar_t *v; + + if ( Cmd_Argc() != 3 ) { + Com_Printf ("usage: seta <variable> <value>\n"); + return; + } + Cvar_Set_f(); + v = Cvar_FindVar( Cmd_Argv( 1 ) ); + if ( !v ) { + return; + } + v->flags |= CVAR_ARCHIVE; +} + +/* +============ +Cvar_Reset_f +============ +*/ +void Cvar_Reset_f( void ) { + if ( Cmd_Argc() != 2 ) { + Com_Printf ("usage: reset <variable>\n"); + return; + } + Cvar_Reset( Cmd_Argv( 1 ) ); +} + +/* +============ +Cvar_WriteVariables + +Appends lines containing "set variable value" for all variables +with the archive flag set to qtrue. +============ +*/ +void Cvar_WriteVariables( fileHandle_t f ) { + cvar_t *var; + char buffer[1024]; + + for (var = cvar_vars ; var ; var = var->next) { + if( var->flags & CVAR_ARCHIVE ) { + // write the latched value, even if it hasn't taken effect yet + if ( var->latchedString ) { + if( strlen( var->name ) + strlen( var->latchedString ) + 10 > sizeof( buffer ) ) { + Com_Printf( S_COLOR_YELLOW "WARNING: value of variable " + "\"%s\" too long to write to file\n", var->name ); + continue; + } + Com_sprintf (buffer, sizeof(buffer), "seta %s \"%s\"\n", var->name, var->latchedString); + } else { + if( strlen( var->name ) + strlen( var->string ) + 10 > sizeof( buffer ) ) { + Com_Printf( S_COLOR_YELLOW "WARNING: value of variable " + "\"%s\" too long to write to file\n", var->name ); + continue; + } + Com_sprintf (buffer, sizeof(buffer), "seta %s \"%s\"\n", var->name, var->string); + } + FS_Write( buffer, strlen( buffer ), f ); + } + } +} + +/* +============ +Cvar_List_f +============ +*/ +void Cvar_List_f( void ) { + cvar_t *var; + int i; + char *match; + + if ( Cmd_Argc() > 1 ) { + match = Cmd_Argv( 1 ); + } else { + match = NULL; + } + + i = 0; + for (var = cvar_vars ; var ; var = var->next, i++) + { + if (match && !Com_Filter(match, var->name, qfalse)) continue; + + if (var->flags & CVAR_SERVERINFO) { + Com_Printf("S"); + } else { + Com_Printf(" "); + } + if (var->flags & CVAR_USERINFO) { + Com_Printf("U"); + } else { + Com_Printf(" "); + } + if (var->flags & CVAR_ROM) { + Com_Printf("R"); + } else { + Com_Printf(" "); + } + if (var->flags & CVAR_INIT) { + Com_Printf("I"); + } else { + Com_Printf(" "); + } + if (var->flags & CVAR_ARCHIVE) { + Com_Printf("A"); + } else { + Com_Printf(" "); + } + if (var->flags & CVAR_LATCH) { + Com_Printf("L"); + } else { + Com_Printf(" "); + } + if (var->flags & CVAR_CHEAT) { + Com_Printf("C"); + } else { + Com_Printf(" "); + } + + Com_Printf (" %s \"%s\"\n", var->name, var->string); + } + + Com_Printf ("\n%i total cvars\n", i); + Com_Printf ("%i cvar indexes\n", cvar_numIndexes); +} + +/* +============ +Cvar_Restart_f + +Resets all cvars to their hardcoded values +============ +*/ +void Cvar_Restart_f( void ) { + cvar_t *var; + cvar_t **prev; + + prev = &cvar_vars; + while ( 1 ) { + var = *prev; + if ( !var ) { + break; + } + + // don't mess with rom values, or some inter-module + // communication will get broken (com_cl_running, etc) + if ( var->flags & ( CVAR_ROM | CVAR_INIT | CVAR_NORESTART ) ) { + prev = &var->next; + continue; + } + + // throw out any variables the user created + if ( var->flags & CVAR_USER_CREATED ) { + *prev = var->next; + if ( var->name ) { + Z_Free( var->name ); + } + if ( var->string ) { + Z_Free( var->string ); + } + if ( var->latchedString ) { + Z_Free( var->latchedString ); + } + if ( var->resetString ) { + Z_Free( var->resetString ); + } + // clear the var completely, since we + // can't remove the index from the list + Com_Memset( var, 0, sizeof( var ) ); + continue; + } + + Cvar_Set( var->name, var->resetString ); + + prev = &var->next; + } +} + + + +/* +===================== +Cvar_InfoString +===================== +*/ +char *Cvar_InfoString( int bit ) { + static char info[MAX_INFO_STRING]; + cvar_t *var; + + info[0] = 0; + + for (var = cvar_vars ; var ; var = var->next) { + if (var->flags & bit) { + Info_SetValueForKey (info, var->name, var->string); + } + } + return info; +} + +/* +===================== +Cvar_InfoString_Big + + handles large info strings ( CS_SYSTEMINFO ) +===================== +*/ +char *Cvar_InfoString_Big( int bit ) { + static char info[BIG_INFO_STRING]; + cvar_t *var; + + info[0] = 0; + + for (var = cvar_vars ; var ; var = var->next) { + if (var->flags & bit) { + Info_SetValueForKey_Big (info, var->name, var->string); + } + } + return info; +} + + + +/* +===================== +Cvar_InfoStringBuffer +===================== +*/ +void Cvar_InfoStringBuffer( int bit, char* buff, int buffsize ) { + Q_strncpyz(buff,Cvar_InfoString(bit),buffsize); +} + +/* +===================== +Cvar_Register + +basically a slightly modified Cvar_Get for the interpreted modules +===================== +*/ +void Cvar_Register( vmCvar_t *vmCvar, const char *varName, const char *defaultValue, int flags ) { + cvar_t *cv; + + cv = Cvar_Get( varName, defaultValue, flags ); + if ( !vmCvar ) { + return; + } + vmCvar->handle = cv - cvar_indexes; + vmCvar->modificationCount = -1; + Cvar_Update( vmCvar ); +} + + +/* +===================== +Cvar_Register + +updates an interpreted modules' version of a cvar +===================== +*/ +void Cvar_Update( vmCvar_t *vmCvar ) { + cvar_t *cv = NULL; // bk001129 + assert(vmCvar); // bk + + if ( (unsigned)vmCvar->handle >= cvar_numIndexes ) { + Com_Error( ERR_DROP, "Cvar_Update: handle out of range" ); + } + + cv = cvar_indexes + vmCvar->handle; + + if ( cv->modificationCount == vmCvar->modificationCount ) { + return; + } + if ( !cv->string ) { + return; // variable might have been cleared by a cvar_restart + } + vmCvar->modificationCount = cv->modificationCount; + // bk001129 - mismatches. + if ( strlen(cv->string)+1 > MAX_CVAR_VALUE_STRING ) + Com_Error( ERR_DROP, "Cvar_Update: src %s length %zd exceeds MAX_CVAR_VALUE_STRING", + cv->string, + strlen(cv->string)); + // bk001212 - Q_strncpyz guarantees zero padding and dest[MAX_CVAR_VALUE_STRING-1]==0 + // bk001129 - paranoia. Never trust the destination string. + // bk001129 - beware, sizeof(char*) is always 4 (for cv->string). + // sizeof(vmCvar->string) always MAX_CVAR_VALUE_STRING + //Q_strncpyz( vmCvar->string, cv->string, sizeof( vmCvar->string ) ); // id + Q_strncpyz( vmCvar->string, cv->string, MAX_CVAR_VALUE_STRING ); + + vmCvar->value = cv->value; + vmCvar->integer = cv->integer; +} + + +/* +============ +Cvar_Init + +Reads in all archived cvars +============ +*/ +void Cvar_Init (void) { + cvar_cheats = Cvar_Get("sv_cheats", "1", CVAR_ROM | CVAR_SYSTEMINFO ); + + Cmd_AddCommand ("toggle", Cvar_Toggle_f); + Cmd_AddCommand ("set", Cvar_Set_f); + Cmd_AddCommand ("sets", Cvar_SetS_f); + Cmd_AddCommand ("setu", Cvar_SetU_f); + Cmd_AddCommand ("seta", Cvar_SetA_f); + Cmd_AddCommand ("reset", Cvar_Reset_f); + Cmd_AddCommand ("cvarlist", Cvar_List_f); + Cmd_AddCommand ("cvar_restart", Cvar_Restart_f); +} |