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417 lines
8.1 KiB
417 lines
8.1 KiB
/*++
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Copyright (c) 1990 Microsoft Corporation
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Module Name:
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mbrutil.c
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Abstract:
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This file contains miscelaneous functions used in the browser extension.
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These functions include argument processing, message displaying,
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setting of switches, etc.
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Author:
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Ramon Juan San Andres (ramonsa) 06-Nov-1990
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Revision History:
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--*/
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#include "mbr.h"
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/**************************************************************************/
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int
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pascal
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procArgs (
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IN ARG far * pArg
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)
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/*++
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Routine Description:
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Decodes arguments passed into extension into commonly used
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variables.
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Arguments:
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pArg - Supplies a pointer to the arguments.
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Return Value:
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The type of the argument.
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--*/
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{
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buf[0] = 0;
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cArg = 0;
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pArgWord = 0;
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pArgText = 0;
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rnArg.flFirst.col = rnArg.flLast.col = 0;
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rnArg.flFirst.lin = rnArg.flLast.lin = 0;
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pFileCur = FileNameToHandle ("", ""); /* get current file handle */
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switch (pArg->argType) {
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case NOARG: /* <function> only, no arg */
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cArg = pArg->arg.nullarg.cArg; /* get <arg> count */
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GrabWord (); /* get argtext and argword */
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break;
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case NULLARG: /* <arg><function> */
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cArg = pArg->arg.nullarg.cArg; /* get <arg> count */
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GrabWord (); /* get argtext and argword */
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break;
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case STREAMARG: /* <arg>line movement<function> */
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cArg = pArg->arg.streamarg.cArg;/* get <arg> count */
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rnArg.flFirst.col = pArg->arg.streamarg.xStart;
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rnArg.flLast.col = pArg->arg.streamarg.xEnd;
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rnArg.flFirst.lin = pArg->arg.streamarg.yStart;
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if (GetLine(rnArg.flFirst.lin, buf, pFileCur) > rnArg.flFirst.col) {
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pArgText = &buf[rnArg.flFirst.col]; /* point at word */
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buf[rnArg.flLast.col] = 0; /* terminate string */
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}
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break;
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case TEXTARG: /* <arg> text <function> */
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cArg = pArg->arg.textarg.cArg; /* get <arg> count */
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pArgText = pArg->arg.textarg.pText;
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break;
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}
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return pArg->argType;
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}
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/**************************************************************************/
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void
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pascal
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GrabWord (
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void
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)
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/*++
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Routine Description:
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Grabs the word underneath the cursor.
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Upon exit, pArgText points to the word
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Arguments:
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None
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Return Value:
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None.
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--*/
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{
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pArgText = pArgWord = 0;
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pFileCur = FileNameToHandle ("", ""); // get current file handle
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GetTextCursor (&rnArg.flFirst.col, &rnArg.flFirst.lin);
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if (GetLine(rnArg.flFirst.lin, buf, pFileCur)) {
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//
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// get line
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//
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pArgText = &buf[rnArg.flFirst.col]; // point at word
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while (!wordSepar((int)*pArgText)) {
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//
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// Search for end
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//
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pArgText++;
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}
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*pArgText = 0; // and terminate
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pArgWord = pArgText = &buf[rnArg.flFirst.col]; // point at word
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while ((pArgWord > &buf[0]) && !wordSepar ((int)*(pArgWord-1))) {
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pArgWord--;
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}
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}
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}
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/**************************************************************************/
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flagType
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pascal
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wordSepar (
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IN CHAR c
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)
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/*++
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Routine Description:
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Find out if character is a word separator.
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A word separator is anything not in the [a-z, A-Z, 0-9] set.
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Arguments:
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c - Supplies the character.
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Return Value:
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TRUE if c is a word separator, FALSE otherwise
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--*/
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{
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if (((c >= 'a') && (c <= 'z')) ||
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((c >= 'A') && (c <= 'Z')) ||
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((c >= '0') && (c <= '9'))) {
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return FALSE;
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} else {
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return TRUE;
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}
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}
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/**************************************************************************/
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flagType
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pascal
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errstat (
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IN char *sz1,
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IN char *sz2
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)
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/*++
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Routine Description:
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Concatenates two strings and displays them on the status line.
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Arguments:
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sz1 - Supplies a pointer to the first string
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sz2 - Supplies a pointer to the second string.
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Return Value:
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FALSE
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--*/
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{
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buffer buf;
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strcpy (buf, sz1);
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if (sz2) {
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strcat (buf, " ");
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strcat (buf, sz2);
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}
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_stat (buf);
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return FALSE;
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}
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/**************************************************************************/
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void
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pascal
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_stat (
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IN char * pszFcn
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)
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/*++
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Routine Description:
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Displays extension name and message on the status line
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Arguments:
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pszFcn - Message to display
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Return Value:
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None.
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--*/
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{
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buffer buf; /* message buffer */
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strcpy(buf,"mbrowse: "); /* start with name */
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if (strlen(pszFcn) > 72) {
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pszFcn+= strlen(pszFcn) - 69;
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strcat (buf, "...");
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}
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strcat(buf,pszFcn); /* append message */
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DoMessage (buf); /* display */
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}
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/**************************************************************************/
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int
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far
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pascal
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SetMatchCriteria (
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IN char far *pTxt
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)
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/*++
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Routine Description:
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Sets the mbrmatch switch.
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Creates an MBF mask from the given string and sets the BscMbf variable.
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Arguments:
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pTxt - Supplies the string containing the new default
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match criteria.
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Return Value:
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TRUE if string contains a valid value.
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FALSE otherwise
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--*/
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{
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MBF mbfReqd;
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mbfReqd = GetMbf(pTxt);
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if (mbfReqd != mbfNil) {
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BscMbf = mbfReqd;
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} else {
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return FALSE;
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}
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BscCmnd = CMND_NONE; // reset command state
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return TRUE;
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}
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/**************************************************************************/
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int
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far
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pascal
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SetCalltreeDirection (
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IN char far *pTxt
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)
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/*++
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Routine Description:
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Sets the mbrdir switch.
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Sets the BscCalltreeDir variable to CALLTREE_FORWARD or
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CALLTREE_BACKWARD, depending on the first character of the
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string supplied.
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The given string must start with either 'F' or 'B'.
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Arguments:
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pTxt - Supplies the string containing the new default
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direction.
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Return Value:
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TRUE if the string contains a valid value,
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FALSE otherwise.
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--*/
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{
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switch(*pTxt) {
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case 'f':
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case 'F':
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BscCalltreeDir = CALLTREE_FORWARD;
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break;
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case 'b':
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case 'B':
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BscCalltreeDir = CALLTREE_BACKWARD;
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break;
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default:
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return FALSE;
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break;
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}
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BscCmnd = CMND_NONE; // Reset command state
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return TRUE;
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}
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/**************************************************************************/
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MBF
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pascal
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GetMbf(
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IN PBYTE pTxt
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)
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/*++
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Routine Description:
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Creates an MBF mask from a given string.
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The string is parsed for the characters 'T', 'V', 'F', and 'M'.
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Arguments:
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pTxt - Supplies a pointer to string
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Return Value:
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MBF mask generated from string
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--*/
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{
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MBF mbfReqd = mbfNil;
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if (pTxt) {
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while (*pTxt) {
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switch(*pTxt++) {
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case 'f':
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case 'F':
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mbfReqd |= mbfFuncs;
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break;
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case 'v':
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case 'V':
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mbfReqd |= mbfVars;
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break;
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case 'm':
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case 'M':
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mbfReqd |= mbfMacros;
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break;
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case 't':
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case 'T':
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mbfReqd |= mbfTypes;
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break;
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default:
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break;
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}
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}
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}
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return mbfReqd;
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}
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