130 lines
2.8 KiB
C
130 lines
2.8 KiB
C
/*
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** ULcase Z extension
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**
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** History:
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** 30-Mar-1988 Broken out of "myext"
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** 12-Sep-1988 mz Made WhenLoaded match declaration
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*/
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#include <ctype.h>
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#include "zext.h"
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#ifndef TRUE
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#define TRUE -1
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#define FALSE 0
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#endif
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#ifndef NULL
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#define NULL ((char *) 0)
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#endif
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flagType pascal ulcase (ARG *, int, int, int);
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/*************************************************************************
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**
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** ucase
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** convert arg to upper case.
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*/
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flagType pascal EXTERNAL
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ucase (
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CMDDATA argData,
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ARG far *pArg,
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flagType fMeta
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)
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{
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(void)argData;
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(void)fMeta;
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return ulcase (pArg, 'a', 'z', 'A'-'a');
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}
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/*************************************************************************
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**
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** lcase
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** convert arg to lower case.
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*/
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flagType pascal EXTERNAL
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lcase (
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CMDDATA argData,
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ARG far *pArg,
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flagType fMeta
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)
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{
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(void)argData;
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(void)fMeta;
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return ulcase (pArg, 'A', 'Z', 'a'-'A');
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}
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/*
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** ulcase
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** convert arg case.
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*/
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flagType pascal ulcase (pArg, cLow, cHigh, cAdj)
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ARG *pArg; /* argument data */
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int cLow; /* low char of range to check for */
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int cHigh; /* high char of range to check for */
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int cAdj; /* adjustment to make */
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{
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PFILE pFile;
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COL xStart;
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LINE yStart;
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COL xEnd;
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LINE yEnd;
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int i;
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COL xT;
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char buf[BUFLEN];
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pFile = FileNameToHandle ("", "");
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switch (pArg->argType) {
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case NOARG: /* case switch entire line */
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xStart = 0;
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xEnd = 32765;
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yStart = yEnd = pArg->arg.noarg.y;
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break;
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case NULLARG: /* case switch to EOL */
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xStart = pArg->arg.nullarg.x;
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xEnd = 32765;
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yStart = yEnd = pArg->arg.nullarg.y;
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break;
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case LINEARG: /* case switch line range */
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xStart = 0;
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xEnd = 32765;
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yStart = pArg->arg.linearg.yStart;
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yEnd = pArg->arg.linearg.yEnd;
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break;
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case BOXARG: /* case switch box */
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xStart = pArg->arg.boxarg.xLeft;
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xEnd = pArg->arg.boxarg.xRight;
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yStart = pArg->arg.boxarg.yTop;
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yEnd = pArg->arg.boxarg.yBottom;
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break;
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}
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while (yStart <= yEnd) {
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i = GetLine (yStart, buf, pFile);
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xT = xStart; /* start at begin of box*/
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while ((xT <= i) && (xT <= xEnd)) { /* while in box */
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if ((int)buf[xT] >= cLow && (int)buf[xT] <= cHigh)
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buf[xT] += (char)cAdj;
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xT++;
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}
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PutLine (yStart++, buf, pFile);
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}
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return TRUE;
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}
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/*
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** WhenLoaded
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** Executed when these extensions get loaded.
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*/
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void ulcaseWhenLoaded () {
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return;
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}
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