| 1 | /*
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| 2 | * bltSwitch.c --
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| 3 | *
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| 4 | * This module implements command/argument switch parsing
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| 5 | * procedures for the BLT toolkit.
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| 6 | *
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| 7 | * Copyright 1991-1998 Lucent Technologies, Inc.
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| 8 | *
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| 9 | * Permission to use, copy, modify, and distribute this software and
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| 10 | * its documentation for any purpose and without fee is hereby
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| 11 | * granted, provided that the above copyright notice appear in all
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| 12 | * copies and that both that the copyright notice and warranty
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| 13 | * disclaimer appear in supporting documentation, and that the names
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| 14 | * of Lucent Technologies any of their entities not be used in
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| 15 | * advertising or publicity pertaining to distribution of the software
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| 16 | * without specific, written prior permission.
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| 17 | *
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| 18 | * Lucent Technologies disclaims all warranties with regard to this
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| 19 | * software, including all implied warranties of merchantability and
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| 20 | * fitness. In no event shall Lucent Technologies be liable for any
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| 21 | * special, indirect or consequential damages or any damages
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| 22 | * whatsoever resulting from loss of use, data or profits, whether in
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| 23 | * an action of contract, negligence or other tortuous action, arising
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| 24 | * out of or in connection with the use or performance of this
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| 25 | * software.
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| 26 | */
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| 27 |
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| 28 | #include "bltInt.h"
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| 29 | #if defined(__STDC__)
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| 30 | #include <stdarg.h>
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| 31 | #else
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| 32 | #include <varargs.h>
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| 33 | #endif
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| 34 |
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| 35 | #include "bltSwitch.h"
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| 36 |
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| 37 | /*
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| 38 | *--------------------------------------------------------------
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| 39 | *
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| 40 | * FindSwitchSpec --
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| 41 | *
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| 42 | * Search through a table of configuration specs, looking for
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| 43 | * one that matches a given argvName.
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| 44 | *
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| 45 | * Results:
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| 46 | * The return value is a pointer to the matching entry, or NULL
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| 47 | * if nothing matched. In that case an error message is left
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| 48 | * in the interp's result.
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| 49 | *
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| 50 | * Side effects:
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| 51 | * None.
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| 52 | *
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| 53 | *--------------------------------------------------------------
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| 54 | */
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| 55 | static Blt_SwitchSpec *
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| 56 | FindSwitchSpec(interp, specs, name, needFlags, hateFlags)
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| 57 | Tcl_Interp *interp; /* Used for reporting errors. */
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| 58 | Blt_SwitchSpec *specs; /* Pointer to table of configuration
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| 59 | * specifications for a widget. */
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| 60 | char *name; /* Name (suitable for use in a "switch"
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| 61 | * command) identifying particular option. */
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| 62 | int needFlags; /* Flags that must be present in matching
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| 63 | * entry. */
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| 64 | int hateFlags; /* Flags that must NOT be present in
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| 65 | * matching entry. */
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| 66 | {
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| 67 | register Blt_SwitchSpec *specPtr;
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| 68 | register char c; /* First character of current argument. */
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| 69 | Blt_SwitchSpec *matchPtr; /* Matching spec, or NULL. */
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| 70 | size_t length;
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| 71 |
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| 72 | c = name[1];
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| 73 | length = strlen(name);
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| 74 | matchPtr = NULL;
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| 75 |
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| 76 | for (specPtr = specs; specPtr->type != BLT_SWITCH_END; specPtr++) {
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| 77 | if (specPtr->switchName == NULL) {
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| 78 | continue;
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| 79 | }
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| 80 | if ((specPtr->switchName[1] != c)
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| 81 | || (strncmp(specPtr->switchName, name, length) != 0)) {
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| 82 | continue;
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| 83 | }
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| 84 | if (((specPtr->flags & needFlags) != needFlags)
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| 85 | || (specPtr->flags & hateFlags)) {
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| 86 | continue;
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| 87 | }
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| 88 | if (specPtr->switchName[length] == 0) {
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| 89 | return specPtr; /* Stop on a perfect match. */
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| 90 | }
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| 91 | if (matchPtr != NULL) {
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| 92 | Tcl_AppendResult(interp, "ambiguous option \"", name, "\"",
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| 93 | (char *) NULL);
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| 94 | return (Blt_SwitchSpec *) NULL;
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| 95 | }
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| 96 | matchPtr = specPtr;
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| 97 | }
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| 98 |
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| 99 | if (matchPtr == NULL) {
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| 100 | Tcl_AppendResult(interp, "unknown option \"", name, "\"", (char *)NULL);
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| 101 | return (Blt_SwitchSpec *) NULL;
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| 102 | }
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| 103 | return matchPtr;
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| 104 | }
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| 105 |
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| 106 | /*
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| 107 | *--------------------------------------------------------------
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| 108 | *
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| 109 | * DoSwitch --
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| 110 | *
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| 111 | * This procedure applies a single configuration option
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| 112 | * to a widget record.
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| 113 | *
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| 114 | * Results:
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| 115 | * A standard Tcl return value.
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| 116 | *
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| 117 | * Side effects:
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| 118 | * WidgRec is modified as indicated by specPtr and value.
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| 119 | * The old value is recycled, if that is appropriate for
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| 120 | * the value type.
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| 121 | *
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| 122 | *--------------------------------------------------------------
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| 123 | */
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| 124 | static int
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| 125 | DoSwitch(interp, specPtr, string, record)
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| 126 | Tcl_Interp *interp; /* Interpreter for error reporting. */
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| 127 | Blt_SwitchSpec *specPtr; /* Specifier to apply. */
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| 128 | char *string; /* Value to use to fill in widgRec. */
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| 129 | ClientData record; /* Record whose fields are to be
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| 130 | * modified. Values must be properly
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| 131 | * initialized. */
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| 132 | {
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| 133 | char *ptr;
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| 134 | int isNull;
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| 135 | int count;
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| 136 |
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| 137 | isNull = ((*string == '\0') && (specPtr->flags & BLT_SWITCH_NULL_OK));
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| 138 | do {
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| 139 | ptr = (char *)record + specPtr->offset;
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| 140 | switch (specPtr->type) {
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| 141 | case BLT_SWITCH_BOOLEAN:
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| 142 | if (Tcl_GetBoolean(interp, string, (int *)ptr) != TCL_OK) {
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| 143 | return TCL_ERROR;
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| 144 | }
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| 145 | break;
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| 146 |
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| 147 | case BLT_SWITCH_INT:
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| 148 | if (Tcl_GetInt(interp, string, (int *)ptr) != TCL_OK) {
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| 149 | return TCL_ERROR;
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| 150 | }
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| 151 | break;
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| 152 |
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| 153 | case BLT_SWITCH_INT_NONNEGATIVE:
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| 154 | if (Tcl_GetInt(interp, string, &count) != TCL_OK) {
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| 155 | return TCL_ERROR;
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| 156 | }
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| 157 | if (count < 0) {
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| 158 | Tcl_AppendResult(interp, "bad value \"", string, "\": ",
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| 159 | "can't be negative", (char *)NULL);
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| 160 | return TCL_ERROR;
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| 161 | }
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| 162 | *((int *)ptr) = count;
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| 163 | break;
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| 164 |
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| 165 | case BLT_SWITCH_INT_POSITIVE:
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| 166 | if (Tcl_GetInt(interp, string, &count) != TCL_OK) {
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| 167 | return TCL_ERROR;
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| 168 | }
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| 169 | if (count <= 0) {
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| 170 | Tcl_AppendResult(interp, "bad value \"", string, "\": ",
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| 171 | "must be positive", (char *)NULL);
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| 172 | return TCL_ERROR;
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| 173 | }
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| 174 | *((int *)ptr) = count;
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| 175 | break;
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| 176 |
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| 177 | case BLT_SWITCH_DOUBLE:
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| 178 | if (Tcl_GetDouble(interp, string, (double *)ptr) != TCL_OK) {
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| 179 | return TCL_ERROR;
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| 180 | }
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| 181 | break;
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| 182 |
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| 183 | case BLT_SWITCH_STRING:
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| 184 | {
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| 185 | char *old, *new, **strPtr;
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| 186 |
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| 187 | strPtr = (char **)ptr;
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| 188 | if (isNull) {
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| 189 | new = NULL;
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| 190 | } else {
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| 191 | new = Blt_Strdup(string);
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| 192 | }
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| 193 | old = *strPtr;
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| 194 | if (old != NULL) {
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| 195 | Blt_Free(old);
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| 196 | }
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| 197 | *strPtr = new;
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| 198 | }
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| 199 | break;
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| 200 |
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| 201 | case BLT_SWITCH_LIST:
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| 202 | if (Tcl_SplitList(interp, string, &count, (char ***)ptr)
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| 203 | != TCL_OK) {
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| 204 | return TCL_ERROR;
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| 205 | }
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| 206 | break;
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| 207 |
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| 208 | case BLT_SWITCH_CUSTOM:
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| 209 | if ((*specPtr->customPtr->parseProc) \
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| 210 | (specPtr->customPtr->clientData, interp, specPtr->switchName,
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| 211 | string, record, specPtr->offset) != TCL_OK) {
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| 212 | return TCL_ERROR;
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| 213 | }
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| 214 | break;
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| 215 |
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| 216 | default:
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| 217 | Tcl_AppendResult(interp, "bad switch table: unknown type \"",
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| 218 | Blt_Itoa(specPtr->type), "\"", (char *)NULL);
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| 219 | return TCL_ERROR;
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| 220 | }
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| 221 | specPtr++;
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| 222 | } while ((specPtr->switchName == NULL) &&
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| 223 | (specPtr->type != BLT_SWITCH_END));
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| 224 | return TCL_OK;
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| 225 | }
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| 226 |
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| 227 | /*
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| 228 | *--------------------------------------------------------------
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| 229 | *
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| 230 | * Blt_ProcessSwitches --
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| 231 | *
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| 232 | * Process command-line options and database options to
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| 233 | * fill in fields of a widget record with resources and
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| 234 | * other parameters.
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| 235 | *
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| 236 | * Results:
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| 237 | * Returns the number of arguments comsumed by parsing the
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| 238 | * command line. If an error occurred, -1 will be returned
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| 239 | * and an error messages can be found as the interpreter
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| 240 | * result.
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| 241 | *
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| 242 | * Side effects:
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| 243 | * The fields of widgRec get filled in with information
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| 244 | * from argc/argv and the option database. Old information
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| 245 | * in widgRec's fields gets recycled.
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| 246 | *
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| 247 | *--------------------------------------------------------------
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| 248 | */
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| 249 | int
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| 250 | Blt_ProcessSwitches(interp, specs, argc, argv, record, flags)
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| 251 | Tcl_Interp *interp; /* Interpreter for error reporting. */
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| 252 | Blt_SwitchSpec *specs; /* Describes legal options. */
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| 253 | int argc; /* Number of elements in argv. */
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| 254 | char **argv; /* Command-line options. */
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| 255 | char *record; /* Record whose fields are to be
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| 256 | * modified. Values must be properly
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| 257 | * initialized. */
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| 258 | int flags; /* Used to specify additional flags
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| 259 | * that must be present in switch specs
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| 260 | * for them to be considered. Also,
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| 261 | * may have BLT_SWITCH_ARGV_ONLY set. */
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| 262 | {
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| 263 | register int count;
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| 264 | char *arg;
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| 265 | register Blt_SwitchSpec *specPtr;
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| 266 | int needFlags; /* Specs must contain this set of flags
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| 267 | * or else they are not considered. */
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| 268 | int hateFlags; /* If a spec contains any bits here, it's
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| 269 | * not considered. */
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| 270 |
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| 271 | needFlags = flags & ~(BLT_SWITCH_USER_BIT - 1);
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| 272 | hateFlags = 0;
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| 273 |
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| 274 | /*
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| 275 | * Pass 1: Clear the change flags on all the specs so that we
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| 276 | * can check it later.
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| 277 | */
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| 278 | for (specPtr = specs; specPtr->type != BLT_SWITCH_END; specPtr++) {
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| 279 | specPtr->flags &= ~BLT_SWITCH_SPECIFIED;
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| 280 | }
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| 281 | /*
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| 282 | * Pass 2: Process the arguments that match entries in the specs.
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| 283 | * It's an error if the argument doesn't match anything.
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| 284 | */
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| 285 | for (count = 0; count < argc; count++) {
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| 286 | arg = argv[count];
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| 287 | if (flags & BLT_SWITCH_OBJV_PARTIAL) {
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| 288 | if ((arg[0] != '-') || ((arg[1] == '-') && (argv[2] == '\0'))) {
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| 289 | /*
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| 290 | * If the argument doesn't start with a '-' (not a switch)
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| 291 | * or is '--', stop processing and return the number of
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| 292 | * arguments comsumed.
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| 293 | */
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| 294 | return count;
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| 295 | }
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| 296 | }
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| 297 | specPtr = FindSwitchSpec(interp, specs, arg, needFlags, hateFlags);
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| 298 | if (specPtr == NULL) {
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| 299 | return -1;
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| 300 | }
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| 301 | if (specPtr->type == BLT_SWITCH_FLAG) {
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| 302 | char *ptr;
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| 303 |
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| 304 | ptr = record + specPtr->offset;
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| 305 | *((int *)ptr) |= specPtr->value;
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| 306 | } else if (specPtr->type == BLT_SWITCH_VALUE) {
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| 307 | char *ptr;
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| 308 |
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| 309 | ptr = record + specPtr->offset;
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| 310 | *((int *)ptr) = specPtr->value;
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| 311 | } else {
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| 312 | if ((count + 1) == argc) {
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| 313 | Tcl_AppendResult(interp, "value for \"", arg, "\" missing",
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| 314 | (char *) NULL);
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| 315 | return -1;
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| 316 | }
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| 317 | count++;
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| 318 | if (DoSwitch(interp, specPtr, argv[count], record) != TCL_OK) {
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| 319 | char msg[100];
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| 320 |
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| 321 | sprintf(msg, "\n (processing \"%.40s\" option)",
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| 322 | specPtr->switchName);
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| 323 | Tcl_AddErrorInfo(interp, msg);
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| 324 | return -1;
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| 325 | }
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| 326 | }
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| 327 | specPtr->flags |= BLT_SWITCH_SPECIFIED;
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| 328 | }
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| 329 | return count;
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| 330 | }
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| 331 |
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| 332 | #if (TCL_VERSION_NUMBER >= _VERSION(8,0,0))
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| 333 |
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| 334 | /*
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| 335 | *--------------------------------------------------------------
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| 336 | *
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| 337 | * Blt_ProcessObjSwitches --
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| 338 | *
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| 339 | * Process command-line options and database options to
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| 340 | * fill in fields of a widget record with resources and
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| 341 | * other parameters.
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| 342 | *
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| 343 | * Results:
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| 344 | * Returns the number of arguments comsumed by parsing the
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| 345 | * command line. If an error occurred, -1 will be returned
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| 346 | * and an error messages can be found as the interpreter
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| 347 | * result.
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| 348 | *
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| 349 | * Side effects:
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| 350 | * The fields of widgRec get filled in with information
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| 351 | * from argc/argv and the option database. Old information
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| 352 | * in widgRec's fields gets recycled.
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| 353 | *
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| 354 | *--------------------------------------------------------------
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| 355 | */
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| 356 | int
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| 357 | Blt_ProcessObjSwitches(interp, specs, objc, objv, record, flags)
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| 358 | Tcl_Interp *interp; /* Interpreter for error reporting. */
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| 359 | Blt_SwitchSpec *specs; /* Describes legal options. */
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| 360 | int objc; /* Number of elements in argv. */
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| 361 | Tcl_Obj *CONST *objv; /* Command-line options. */
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| 362 | char *record; /* Record whose fields are to be
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| 363 | * modified. Values must be properly
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| 364 | * initialized. */
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| 365 | int flags; /* Used to specify additional flags
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| 366 | * that must be present in switch specs
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| 367 | * for them to be considered. Also,
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| 368 | * may have BLT_SWITCH_ARGV_ONLY set. */
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| 369 | {
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| 370 | register Blt_SwitchSpec *specPtr;
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| 371 | register int count;
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| 372 | int needFlags; /* Specs must contain this set of flags
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| 373 | * or else they are not considered. */
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| 374 | int hateFlags; /* If a spec contains any bits here, it's
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| 375 | * not considered. */
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| 376 |
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| 377 | needFlags = flags & ~(BLT_SWITCH_USER_BIT - 1);
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| 378 | hateFlags = 0;
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| 379 |
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| 380 | /*
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| 381 | * Pass 1: Clear the change flags on all the specs so that we
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| 382 | * can check it later.
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| 383 | */
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| 384 | for (specPtr = specs; specPtr->type != BLT_SWITCH_END; specPtr++) {
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| 385 | specPtr->flags &= ~BLT_SWITCH_SPECIFIED;
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| 386 | }
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| 387 | /*
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| 388 | * Pass 2: Process the arguments that match entries in the specs.
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| 389 | * It's an error if the argument doesn't match anything.
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| 390 | */
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| 391 | for (count = 0; count < objc; count++) {
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| 392 | char *arg;
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| 393 |
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| 394 | arg = Tcl_GetString(objv[count]);
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| 395 | if (flags & BLT_SWITCH_OBJV_PARTIAL) {
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| 396 | if ((arg[0] != '-') || ((arg[1] == '-') && (arg[2] == '\0'))) {
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| 397 | /*
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| 398 | * If the argument doesn't start with a '-' (not a switch)
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| 399 | * or is '--', stop processing and return the number of
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| 400 | * arguments comsumed.
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| 401 | */
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| 402 | return count;
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| 403 | }
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| 404 | }
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| 405 | specPtr = FindSwitchSpec(interp, specs, arg, needFlags, hateFlags);
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| 406 | if (specPtr == NULL) {
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| 407 | return -1;
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| 408 | }
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| 409 | if (specPtr->type == BLT_SWITCH_FLAG) {
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| 410 | char *ptr;
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| 411 |
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| 412 | ptr = record + specPtr->offset;
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| 413 | *((int *)ptr) |= specPtr->value;
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| 414 | } else if (specPtr->type == BLT_SWITCH_VALUE) {
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| 415 | char *ptr;
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| 416 |
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| 417 | ptr = record + specPtr->offset;
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| 418 | *((int *)ptr) = specPtr->value;
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| 419 | } else {
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| 420 | count++;
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| 421 | if (count == objc) {
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| 422 | Tcl_AppendResult(interp, "value for \"", arg, "\" missing",
|
|---|
| 423 | (char *) NULL);
|
|---|
| 424 | return -1;
|
|---|
| 425 | }
|
|---|
| 426 | arg = Tcl_GetString(objv[count]);
|
|---|
| 427 | if (DoSwitch(interp, specPtr, arg, record) != TCL_OK) {
|
|---|
| 428 | char msg[100];
|
|---|
| 429 |
|
|---|
| 430 | sprintf(msg, "\n (processing \"%.40s\" option)",
|
|---|
| 431 | specPtr->switchName);
|
|---|
| 432 | Tcl_AddErrorInfo(interp, msg);
|
|---|
| 433 | return -1;
|
|---|
| 434 | }
|
|---|
| 435 | }
|
|---|
| 436 | specPtr->flags |= BLT_SWITCH_SPECIFIED;
|
|---|
| 437 | }
|
|---|
| 438 | return count;
|
|---|
| 439 | }
|
|---|
| 440 | #endif
|
|---|
| 441 |
|
|---|
| 442 | /*
|
|---|
| 443 | *----------------------------------------------------------------------
|
|---|
| 444 | *
|
|---|
| 445 | * Blt_FreeSwitches --
|
|---|
| 446 | *
|
|---|
| 447 | * Free up all resources associated with switch options.
|
|---|
| 448 | *
|
|---|
| 449 | * Results:
|
|---|
| 450 | * None.
|
|---|
| 451 | *
|
|---|
| 452 | *----------------------------------------------------------------------
|
|---|
| 453 | */
|
|---|
| 454 |
|
|---|
| 455 | /* ARGSUSED */
|
|---|
| 456 | void
|
|---|
| 457 | Blt_FreeSwitches(specs, record, needFlags)
|
|---|
| 458 | Blt_SwitchSpec *specs; /* Describes legal options. */
|
|---|
| 459 | char *record; /* Record whose fields contain current
|
|---|
| 460 | * values for options. */
|
|---|
| 461 | int needFlags; /* Used to specify additional flags
|
|---|
| 462 | * that must be present in config specs
|
|---|
| 463 | * for them to be considered. */
|
|---|
| 464 | {
|
|---|
| 465 | register Blt_SwitchSpec *specPtr;
|
|---|
| 466 |
|
|---|
| 467 | for (specPtr = specs; specPtr->type != BLT_SWITCH_END; specPtr++) {
|
|---|
| 468 | if ((specPtr->flags & needFlags) == needFlags) {
|
|---|
| 469 | char *ptr;
|
|---|
| 470 |
|
|---|
| 471 | ptr = record + specPtr->offset;
|
|---|
| 472 | switch (specPtr->type) {
|
|---|
| 473 | case BLT_SWITCH_STRING:
|
|---|
| 474 | case BLT_SWITCH_LIST:
|
|---|
| 475 | if (*((char **) ptr) != NULL) {
|
|---|
| 476 | Blt_Free(*((char **) ptr));
|
|---|
| 477 | *((char **) ptr) = NULL;
|
|---|
| 478 | }
|
|---|
| 479 | break;
|
|---|
| 480 |
|
|---|
| 481 | case BLT_SWITCH_CUSTOM:
|
|---|
| 482 | if ((*(char **)ptr != NULL) &&
|
|---|
| 483 | (specPtr->customPtr->freeProc != NULL)) {
|
|---|
| 484 | (*specPtr->customPtr->freeProc)(*(char **)ptr);
|
|---|
| 485 | *((char **) ptr) = NULL;
|
|---|
| 486 | }
|
|---|
| 487 | break;
|
|---|
| 488 |
|
|---|
| 489 | default:
|
|---|
| 490 | break;
|
|---|
| 491 | }
|
|---|
| 492 | }
|
|---|
| 493 | }
|
|---|
| 494 | }
|
|---|
| 495 |
|
|---|
| 496 |
|
|---|
| 497 | /*
|
|---|
| 498 | *----------------------------------------------------------------------
|
|---|
| 499 | *
|
|---|
| 500 | * Blt_SwitchModified --
|
|---|
| 501 | *
|
|---|
| 502 | * Given the configuration specifications and one or more option
|
|---|
| 503 | * patterns (terminated by a NULL), indicate if any of the matching
|
|---|
| 504 | * configuration options has been reset.
|
|---|
| 505 | *
|
|---|
| 506 | * Results:
|
|---|
| 507 | * Returns 1 if one of the options has changed, 0 otherwise.
|
|---|
| 508 | *
|
|---|
| 509 | *----------------------------------------------------------------------
|
|---|
| 510 | */
|
|---|
| 511 | int Blt_SwitchChanged
|
|---|
| 512 | TCL_VARARGS_DEF(Blt_SwitchSpec *, arg1)
|
|---|
| 513 | {
|
|---|
| 514 | va_list argList;
|
|---|
| 515 | Blt_SwitchSpec *specs;
|
|---|
| 516 | register Blt_SwitchSpec *specPtr;
|
|---|
| 517 | register char *switchName;
|
|---|
| 518 |
|
|---|
| 519 | specs = TCL_VARARGS_START(Blt_SwitchSpec *, arg1, argList);
|
|---|
| 520 | while ((switchName = va_arg(argList, char *)) != NULL) {
|
|---|
| 521 | for (specPtr = specs; specPtr->type != BLT_SWITCH_END; specPtr++) {
|
|---|
| 522 | if ((Tcl_StringMatch(specPtr->switchName, switchName)) &&
|
|---|
| 523 | (specPtr->flags & BLT_SWITCH_SPECIFIED)) {
|
|---|
| 524 | va_end(argList);
|
|---|
| 525 | return 1;
|
|---|
| 526 | }
|
|---|
| 527 | }
|
|---|
| 528 | }
|
|---|
| 529 | va_end(argList);
|
|---|
| 530 | return 0;
|
|---|
| 531 | }
|
|---|
