--- /dev/null
+/* Edit.c A simple editor using MMURTL file system and keyboard services\r
+ Use MakeIT.Bat to build this MMURTL samples application, or\r
+ use CM32 and DASM spearately:\r
+ CM32 Edit.c\r
+ DASM Edit.bat\r
+*/\r
+\r
+#define U32 unsigned long\r
+#define S32 long\r
+#define U16 unsigned int\r
+#define S16 int\r
+#define U8 unsigned char\r
+#define S8 char\r
+\r
+#define TRUE 1\r
+#define FALSE 0\r
+\r
+#include <stdio.h>\r
+#include <string.h>\r
+#include <ctype.h>\r
+\r
+/* Includes for OS public calls and structures */\r
+\r
+#include "\OSSOURCE\MKernel.h"\r
+#include "\OSSOURCE\MMemory.h"\r
+#include "\OSSOURCE\MData.h"\r
+#include "\OSSOURCE\MTimer.h"\r
+#include "\OSSOURCE\MVid.h"\r
+#include "\OSSOURCE\MKbd.h"\r
+#include "\OSSOURCE\MJob.h"\r
+#include "\OSSOURCE\MFiles.h"\r
+\r
+#define EDVID BRITEWHITE|BGBLUE\r
+#define NORMVID WHITE|BGBLACK\r
+#define MARKVID WHITE|BGRED\r
+#define STATVID BLACK|BGCYAN\r
+\r
+#define EMPTY 99999\r
+#define NLINESMAX 26\r
+\r
+struct EditRecType {\r
+ U8 *pBuf;\r
+ U8 *pBufWork; /* For copy and move */\r
+ U32 Line[NLINESMAX]; /* Offset in buf for 1st char in line */\r
+ U32 iBufMax; /* sBuf - 1 */\r
+ U32 iColMin; /* Screen coords */\r
+ U32 iRowMin;\r
+ U32 iColMax;\r
+ U32 iRowMax;\r
+ U32 sLine;\r
+ U8 bSpace;\r
+ U8 fVisible;\r
+ U32 iAttrMark;\r
+ U32 iAttrNorm;\r
+ U32 iTabNorm;\r
+ U32 oBufLine0 /* oBufLine0 */\r
+ U32 iCol; /* cursor, 0..sLine-1 */\r
+ U32 iLine; /* cursor, 0..cLines-1 */\r
+ U32 oBufInsert; /* offset of next char in */\r
+ U32 oBufLast; /* offset+1 of last char */\r
+ U32 oBufMark;\r
+ U32 oBufBound;\r
+ };\r
+\r
+struct EditRecType EdRec;\r
+struct EditRecType *pEdit;\r
+char *pBuf1, *pBuf2;\r
+unsigned char b, b1;\r
+long erc, fh;\r
+char fModified;\r
+char fOvertype;\r
+char aStat[80];\r
+char aStat1[80];\r
+char aCmd[80]; /* Get our command line */\r
+long cbCmd = 0;\r
+char *apParam[13]; /* Param 0 is cmd name */\r
+long acbParam[13];\r
+#define nParamsMax 13\r
+char Filename[60];\r
+long cbFilename;\r
+unsigned char filler[100];\r
+\r
+\r
+void clearbuf(void); /* prototype for forward usage */\r
+\r
+/*********************************************************\r
+ Displays errors if they occur for certain file operations.\r
+*********************************************************/\r
+\r
+long CheckErc(long call, long erc)\r
+{\r
+char st[40];\r
+long i;\r
+\r
+ if (erc) {\r
+ FillData(st, 40, 0);\r
+ Beep();\r
+ switch (call) {\r
+ case 1:\r
+ sprintf(st, "Error %05d occurred on OpenFile", erc);\r
+ break;\r
+ case 2:\r
+ sprintf(st, "Error %05d occurred on ReadBytes", erc);\r
+ break;\r
+ case 3:\r
+ sprintf(st, "Error %05d occurred on WriteBytes", erc);\r
+ break;\r
+ case 4:\r
+ sprintf(st, "Error %05d occurred on CreateFile", erc);\r
+ break;\r
+ case 5:\r
+ sprintf(st, "Error %05d occurred on SetFileSize", erc);\r
+ break;\r
+ case 6:\r
+ sprintf(st, "Error %05d occurred on SetFileLFA", erc);\r
+ break;\r
+ case 7:\r
+ sprintf(st, "Error %05d occurred on ReadKbd", erc);\r
+ break;\r
+ default:\r
+ sprintf(st, "Error %05d occurred on last command", erc);\r
+ break;\r
+ }\r
+ for (i=0; i<40; i++)\r
+ if (!st[i])\r
+ st[i] = ' ';\r
+\r
+ PutVidChars (40, 24, st, 39, STATVID);\r
+ }\r
+ return (erc);\r
+}\r
+\r
+/*********************************************************\r
+ Clears the status line with 80 blank chars.\r
+*********************************************************/\r
+void ClearStatus(void)\r
+{\r
+char st[80];\r
+ FillData(st, 80, 0);\r
+ PutVidChars (0, 24, st, 80, NORMVID);\r
+}\r
+\r
+\r
+/*************************************************************\r
+ Saves a file you are editing. If fPrompt is true, this\r
+ will prompt you to save. If fClose is true, the file will be \r
+ closed and the buffer will be closed.\r
+**************************************************************/\r
+\r
+void SaveFile(int fPrompt, int fClose)\r
+{\r
+U32 i, keycode, fYes;\r
+unsigned char *pBuff;\r
+\r
+ pBuff = pEdit->pBuf;\r
+\r
+ if ((fh) && (fModified))\r
+ {\r
+ if (pEdit->fVisible)\r
+ { /* fix visible characters */\r
+ for (i=0; i <=pEdit->iBufMax; i++)\r
+ if (pBuff[i] == 0x07)\r
+ pBuff[i] = 0x20;\r
+ pEdit->fVisible = FALSE;\r
+ }\r
+ fYes = 1;\r
+ if (fPrompt)\r
+ {\r
+ ClearStatus();\r
+ SetXY(0, 24);\r
+ TTYOut("This file has been modified. SAVE IT? (Y/N)", 43, BLACK|BGCYAN);\r
+ ReadKbd(&keycode, 1);\r
+ if (((keycode & 0xff) == 'N') || ((keycode & 0xff) == 'n'))\r
+ {\r
+ fYes = 0;\r
+ ClearStatus();\r
+ }\r
+ }\r
+\r
+ if (fYes)\r
+ {\r
+ erc = CheckErc(6, SetFileLFA(fh, 0));\r
+ if (!erc)\r
+ erc = CheckErc(5, SetFileSize(fh,\r
+ pEdit->oBufLast));\r
+ if (!erc)\r
+ erc = CheckErc(3, WriteBytes (fh, pBuf1,\r
+ pEdit->oBufLast, &i));\r
+ fModified = 0;\r
+ ClearStatus();\r
+ PutVidChars (0, 24, "DONE... ", 10, STATVID);\r
+ Sleep(150);\r
+ ClearStatus();\r
+ }\r
+\r
+ }\r
+\r
+ if (fh && fClose)\r
+ {\r
+ CloseFile(fh);\r
+ fh = 0;\r
+ cbFilename = 0;\r
+ clearbuf();\r
+ }\r
+}\r
+\r
+/*************************************************************\r
+ This prompts for a filename to open and opens it if it\r
+ exists. If not, it will prompts to create.\r
+**************************************************************/\r
+\r
+void OpenAFile(char *name)\r
+{\r
+U32 filesize, dret, keycode;\r
+\r
+ erc = 0;\r
+ cbFilename = 0;\r
+ if (!name)\r
+ {\r
+ SetXY(0,24);\r
+ PutVidChars (0,24, "Filename: ", 10, BLACK|BGWHITE);\r
+ SetXY(10,24);\r
+ EditLine(Filename, 0, 60, &cbFilename, &b1, BLACK|BGCYAN);\r
+ SetXY(0,0);\r
+ }\r
+ else\r
+ {\r
+ b1=0x0d;\r
+ strncpy(Filename, name, 13);\r
+ cbFilename = strlen(Filename);\r
+ }\r
+ if ((b1==0x0d) && (cbFilename)) {\r
+ erc = OpenFile(Filename, cbFilename, ModeModify, 1, &fh);\r
+ if (!erc) {\r
+ GetFileSize(fh, &filesize);\r
+ if (filesize < 131000) /* Buf is 131071 */\r
+ {\r
+ erc = ReadBytes (fh, pBuf1, filesize, &dret);\r
+ if (erc > 1)\r
+ erc = CheckErc(2, erc);\r
+ else erc = 0;\r
+ pEdit->oBufLast = dret; /* offset+1 of last char */\r
+ pBuf1[pEdit->oBufLast] = 0x0F; /* the SUN */\r
+ }\r
+ else\r
+ {\r
+ CloseFile(fh);\r
+ fh = 0;\r
+ Beep();\r
+ SetXY(50, 24);\r
+ TTYOut("File is too large to edit.", 26, BLACK|BGCYAN);\r
+ ReadKbd(&keycode, 1);\r
+ }\r
+ }\r
+ else if (erc == 203) { /* no such file */\r
+ Beep();\r
+ SetXY(50, 24);\r
+ TTYOut("Doesn't exist. Create?? (Y/N)", 29, BLACK|BGCYAN);\r
+ ReadKbd(&keycode, 1);\r
+ if (((keycode & 0xff) == 'Y') || ((keycode & 0xff) == 'y')) {\r
+ erc = CheckErc(4, CreateFile(Filename, cbFilename, 0));\r
+\r
+ if (!erc)\r
+ erc = CheckErc(1, OpenFile(Filename, cbFilename,\r
+ ModeModify, 1, &fh));\r
+\r
+ if (erc) {\r
+ fh = 0;\r
+ cbFilename = 0;\r
+ }\r
+\r
+ }\r
+ else {\r
+ cbFilename = 0;\r
+ ClearStatus();\r
+ }\r
+ }\r
+ else\r
+ CheckErc(1, erc);\r
+ }\r
+\r
+ if (!erc)\r
+ ClearStatus();\r
+}\r
+\r
+/************************************************************\r
+ This counts ABSOLUTE LINES from the begining of the buffer\r
+ up to point of oBufLine0 (which is the first char displayed\r
+ in the window. ABSOLUTE means LFs were found, even though\r
+ we word wrap always.\r
+*************************************************************/\r
+\r
+unsigned long CountEols (void)\r
+{\r
+unsigned long nEols, i;\r
+unsigned char *pBuff;\r
+\r
+ pBuff = pEdit->pBuf;\r
+ nEols = 0;\r
+ i = 0;\r
+\r
+ while (i < pEdit->oBufLine0) /* count LFs */\r
+ if (pBuff[i++] == 0x0A)\r
+ nEols++;\r
+\r
+ return(nEols);\r
+}\r
+\r
+\r
+\r
+/************************************************************\r
+ This returns the index to the the last character in a line\r
+ upto a maximum of sLine-1. iBuf points to the beginning\r
+ point in the buffer to find the end of line for.\r
+*************************************************************/\r
+\r
+unsigned long findEol (unsigned long iBuf)\r
+{\r
+\r
+unsigned long iEol, iEolMax;\r
+unsigned char *pBuff;\r
+\r
+ pBuff = pEdit->pBuf;\r
+\r
+ /* Calculate the most it could be */\r
+\r
+ iEolMax = iBuf + pEdit->sLine-1;\r
+\r
+ /* Fix it if EOL is past end of data */\r
+\r
+ if (iEolMax > pEdit->oBufLast)\r
+ iEolMax = pEdit->oBufLast;\r
+\r
+ iEol = iBuf;\r
+ while ((pBuff[iEol] != 0x0A) && (iEol < iEolMax)) /* Find CR */\r
+ iEol++;\r
+ if ((iEol == iEolMax) && (pBuff[iEol] != 0x0A)) { /* if no CR... */\r
+ iEol = iEolMax;\r
+ if (iEolMax < pEdit->oBufLast) {\r
+\r
+ /* now work back to last space */\r
+ while ((pBuff[iEol] != pEdit->bSpace) && (iEol > iBuf))\r
+ iEol--;\r
+\r
+ /* now find first non-space - allows */\r
+ if ((iEol > iBuf) &&\r
+ (pBuff[iEol] == pEdit->bSpace) && /* wrap-around w/ double space */\r
+ (iEol == iEolMax)) {\r
+\r
+ if ((pBuff[iEol-1] == pEdit->bSpace) ||\r
+ ((iEol == iEolMax) && (pBuff[iEol+1] == pEdit->bSpace))) {\r
+ while ((pBuff[iEol] == pEdit->bSpace) && (iEol > iBuf))\r
+ iEol--;\r
+ while ((pBuff[iEol] != pEdit->bSpace) && (iEol > iBuf))\r
+ iEol--;\r
+ }\r
+ }\r
+ if ((iEol == iBuf) &&\r
+ (pBuff[iBuf] > 0) &&\r
+ (pBuff[iEolMax] > 0)) /* handles "all-char" of full line */\r
+ iEol = iEolMax;\r
+ }\r
+ }\r
+ return(iEol);\r
+}\r
+\r
+/************************************************************\r
+ This walks back through the buffer looking for the\r
+ logical end of a line.\r
+*************************************************************/\r
+\r
+\r
+unsigned long findPrevLine (unsigned long oBufStart)\r
+{\r
+unsigned long i, j;\r
+char *pBuff;\r
+\r
+ pBuff = pEdit->pBuf;\r
+\r
+ i = 0;\r
+ if (oBufStart)\r
+ i = oBufStart - 1;\r
+ while ((i) && (pBuff[i] != 0x0A))\r
+ i--;\r
+ if (i > 0)\r
+ i--;\r
+ while ((i > 0) && (pBuff[i] != 0x0A))\r
+ i--;\r
+ if (i)\r
+ i++; /* Get to known start of line */\r
+ do {\r
+ j = i;\r
+ i = (findEol (j)) + 1;\r
+ }\r
+ while (i < oBufStart);\r
+ return(j);\r
+}\r
+\r
+/************************************************************\r
+ This executes the BEGIN BLOCK (Mark) command.\r
+*************************************************************/\r
+\r
+\r
+void doMark (unsigned long iLn)\r
+{\r
+unsigned long iColStart, iColFinish, iMarkLoc, iBoundLoc;\r
+\r
+ if (pEdit->oBufMark < EMPTY) {\r
+ if (pEdit->oBufMark <= pEdit->oBufBound) {\r
+ iMarkLoc = pEdit->oBufMark;\r
+ iBoundLoc = pEdit->oBufBound;\r
+ }\r
+ else {\r
+ iMarkLoc = pEdit->oBufBound;\r
+ iBoundLoc = pEdit->oBufMark;\r
+ }\r
+ if ( ((iMarkLoc >= pEdit->Line[iLn]) && (iMarkLoc < pEdit->Line[iLn+1])) ||\r
+ ((iBoundLoc >= pEdit->Line[iLn]) && (iBoundLoc < pEdit->Line[iLn+1])) ||\r
+ ((iMarkLoc < pEdit->Line[iLn]) && (iBoundLoc >= pEdit->Line[iLn+1])) )\r
+ {\r
+ if (iMarkLoc >= pEdit->Line[iLn])\r
+ iColStart = pEdit->iColMin + iMarkLoc - pEdit->Line[iLn];\r
+ else\r
+ iColStart = pEdit->iColMin;\r
+\r
+ if (iBoundLoc < pEdit->Line[iLn+1])\r
+ iColFinish = pEdit->iColMin + iBoundLoc - pEdit->Line[iLn];\r
+ else\r
+ iColFinish = pEdit->iColMin + pEdit->Line[iLn+1] - pEdit->Line[iLn] - 1;\r
+\r
+ if (iColStart > pEdit->iColMin)\r
+ PutVidAttrs (pEdit->iColMin,\r
+ iLn,\r
+ iColStart-pEdit->iColMin,\r
+ pEdit->iAttrNorm);\r
+ PutVidAttrs (iColStart, iLn, iColFinish - iColStart +1, pEdit->iAttrMark);\r
+\r
+ if (iColFinish < pEdit->iColMax)\r
+ PutVidAttrs (iColFinish+1,\r
+ iLn,\r
+ pEdit->iColMax - iColFinish,\r
+ pEdit->iAttrNorm);\r
+ }\r
+ else /*buf col*/\r
+ PutVidAttrs (pEdit->iColMin,\r
+ iLn,\r
+ pEdit->sLine,\r
+ pEdit->iAttrNorm);\r
+ }\r
+}\r
+\r
+\r
+/************************************************************\r
+ This inserts data into the main editing buffer.\r
+*************************************************************/\r
+\r
+\r
+char putInBuf( unsigned char bPutIn,\r
+ char fOvertype,\r
+ char fSpecInsert)\r
+{\r
+unsigned long cb;\r
+char fOK, *pBuff;\r
+\r
+ fModified = 1;\r
+ pBuff = pEdit->pBuf;\r
+\r
+ if ((pEdit->oBufInsert < pEdit->iBufMax) &&\r
+ ((pEdit->oBufLast < pEdit->iBufMax) ||\r
+ ((fOvertype) && (!fSpecInsert))))\r
+ {\r
+ fOK = 1;\r
+ if ((fOvertype) && (!fSpecInsert)) {\r
+ pBuff[pEdit->oBufInsert] = bPutIn;\r
+ if (pEdit->oBufLast == pEdit->oBufInsert)\r
+ pEdit->oBufLast++;\r
+ pEdit->oBufInsert++;\r
+ }\r
+ else {\r
+ cb = pEdit->oBufLast - pEdit->oBufInsert + 1;\r
+ CopyData (&pBuff[pEdit->oBufInsert], pEdit->pBufWork, cb);\r
+ pBuff[pEdit->oBufInsert] = bPutIn;\r
+ CopyData (pEdit->pBufWork, &pBuff[pEdit->oBufInsert+1], cb);\r
+ pEdit->oBufLast++;\r
+ pEdit->oBufInsert++;\r
+ if (pEdit->oBufMark < EMPTY) {\r
+ if (pEdit->oBufInsert-1 < pEdit->oBufMark)\r
+ pEdit->oBufMark++;\r
+ if (pEdit->oBufInsert-1 <= pEdit->oBufBound)\r
+ pEdit->oBufBound++;\r
+ }\r
+ }\r
+ }\r
+ else {\r
+ fOK = 0;\r
+ Beep();\r
+ erc = 40400;\r
+ }\r
+ return (fOK);\r
+}\r
+\r
+/************************************************************\r
+ This executes the MOVE command which moves a marked\r
+ block to the cursor's current location in the file.\r
+*************************************************************/\r
+\r
+void moveData (void)\r
+{\r
+unsigned long i, iMk, iBd;\r
+char *pBuff, *pBuffWork;\r
+\r
+ pBuff = pEdit->pBuf;\r
+ pBuffWork = pEdit->pBufWork;\r
+\r
+if (pEdit->oBufMark < EMPTY) {\r
+ fModified = 1;\r
+ if (pEdit->oBufMark <= pEdit->oBufBound) {\r
+ iMk = pEdit->oBufMark;\r
+ iBd = pEdit->oBufBound;\r
+ }\r
+ else {\r
+ iBd = pEdit->oBufMark;\r
+ iMk = pEdit->oBufBound;\r
+ }\r
+ if ((pEdit->oBufInsert < iMk) || (pEdit->oBufInsert > iBd)) {\r
+ for (i=0; i <= pEdit->oBufLast; i++)\r
+ pBuffWork[i] = pBuff[i];\r
+ if (pEdit->oBufInsert < iMk) {\r
+ for (i=0; i<=iBd-iMk; i++) /* Move mk/bd */\r
+ pBuff[pEdit->oBufInsert+i] = pBuffWork[iMk+i];\r
+ for (i=0; i<=iMk - pEdit->oBufInsert - 1; i++) /* Shift overwritten ahead */\r
+ pBuff[pEdit->oBufInsert+iBd-iMk+1+i] =\r
+ pBuffWork[pEdit->oBufInsert+i];\r
+ }\r
+ if (pEdit->oBufInsert > iBd) {\r
+ for (i=0; pEdit->oBufInsert - iBd - 1; i++)\r
+ pBuff[iMk+i] = pBuffWork[iBd+1+i];\r
+ pEdit->oBufInsert = pEdit->oBufInsert - iBd + iMk - 1;\r
+ for (i=0; i <=iBd-iMk; i++)\r
+ pBuff[pEdit->oBufInsert+i] = pBuffWork[iMk+i];\r
+ }\r
+ iBd = pEdit->oBufInsert + iBd - iMk;\r
+ iMk = pEdit->oBufInsert;\r
+ if (pEdit->oBufBound > pEdit->oBufMark) {\r
+ pEdit->oBufBound = iBd;\r
+ pEdit->oBufMark = iMk;\r
+ }\r
+ else {\r
+ pEdit->oBufMark = iBd;\r
+ pEdit->oBufBound = iMk;\r
+ }\r
+ }\r
+}\r
+ else Beep();\r
+}\r
+\r
+/************************************************************\r
+ This executes the COPY command which copies a marked\r
+ block to the cursor's current location in the file.\r
+*************************************************************/\r
+\r
+void CopyIt (void)\r
+{\r
+unsigned long iMk, iBd;\r
+char *pBuff, *pBuffWork;\r
+\r
+ pBuff = pEdit->pBuf;\r
+ pBuffWork = pEdit->pBufWork;\r
+\r
+if (pEdit->oBufMark < EMPTY) {\r
+ fModified = 1;\r
+\r
+ if (pEdit->oBufMark <= pEdit->oBufBound) {\r
+ iMk = pEdit->oBufMark;\r
+ iBd = pEdit->oBufBound;\r
+ } else {\r
+ iBd = pEdit->oBufMark;\r
+ iMk = pEdit->oBufBound;\r
+ }\r
+ if (pEdit->oBufLast+iBd-iMk+1 < pEdit->iBufMax) {\r
+ CopyData(pBuff, pBuffWork, pEdit->oBufLast+1);\r
+ CopyData(&pBuffWork[iMk], &pBuff[pEdit->oBufInsert], iBd-iMk+1);\r
+ if (pEdit->oBufLast >= pEdit->oBufInsert)\r
+ CopyData(&pBuffWork[pEdit->oBufInsert],\r
+ &pBuff[pEdit->oBufInsert+iBd-iMk+1],\r
+ pEdit->oBufLast - pEdit->oBufInsert+1);\r
+ iBd = pEdit->oBufInsert + iBd - iMk;\r
+ iMk = pEdit->oBufInsert;\r
+ pEdit->oBufInsert = pEdit->oBufInsert + iBd - iMk + 1;\r
+ pEdit->oBufLast = pEdit->oBufLast + iBd - iMk + 1;\r
+ if (pEdit->oBufBound > pEdit->oBufMark) {\r
+ pEdit->oBufBound = iBd;\r
+ pEdit->oBufMark = iMk;\r
+ }\r
+ else {\r
+ pEdit->oBufMark = iBd;\r
+ pEdit->oBufBound = iMk;\r
+ }\r
+ }\r
+}\r
+else Beep();\r
+}\r
+\r
+/************************************************************\r
+ This sets the characters on the screen to normal attributes\r
+*************************************************************/\r
+\r
+void normAttr (void)\r
+{\r
+unsigned long i;\r
+\r
+ for (i = pEdit->iRowMin; i <= pEdit->iRowMax; i++)\r
+ PutVidAttrs (pEdit->iColMin, i, pEdit->sLine, pEdit->iAttrNorm);\r
+}\r
+\r
+/************************************************************\r
+ This unmarks a selected block. (hides it).\r
+*************************************************************/\r
+\r
+void nullMarkBound (void)\r
+{\r
+ pEdit->oBufMark = EMPTY;\r
+ pEdit->oBufBound = EMPTY;\r
+ normAttr ();\r
+}\r
+\r
+/************************************************************\r
+ This DELETES a selected block.\r
+*************************************************************/\r
+\r
+void deleteData (void)\r
+{\r
+unsigned long i, iMk, iBd;\r
+char fProb;\r
+char *pBuff, *pBuffWork;\r
+\r
+ pBuff = pEdit->pBuf;\r
+ pBuffWork = pEdit->pBufWork;\r
+\r
+if (pEdit->oBufMark < EMPTY) {\r
+ fModified = 1;\r
+ if (pEdit->oBufMark <= pEdit->oBufBound) {\r
+ iMk = pEdit->oBufMark;\r
+ iBd = pEdit->oBufBound;\r
+ } else {\r
+ iBd = pEdit->oBufMark;\r
+ iMk = pEdit->oBufBound;\r
+ }\r
+ if ((pEdit->oBufLine0 >= iMk) && (pEdit->oBufLine0 <= iBd))\r
+ fProb = TRUE;\r
+ else fProb = FALSE;\r
+ CopyData(&pBuff[iBd+1], &pBuff[iMk], pEdit->oBufLast-iBd);\r
+ pEdit->oBufLast = pEdit->oBufLast - iBd + iMk - 1;\r
+ if (pEdit->oBufInsert > iBd)\r
+ pEdit->oBufInsert = pEdit->oBufInsert - iBd + iMk;\r
+ else if ((pEdit->oBufInsert > iMk) && (pEdit->oBufInsert <= iBd))\r
+ pEdit->oBufInsert = iMk;\r
+ if (pEdit->oBufInsert > pEdit->oBufLast)\r
+ pEdit->oBufInsert = pEdit->oBufLast;\r
+ if (fProb) {\r
+ i = findPrevLine (pEdit->oBufInsert);\r
+ pEdit->oBufLine0 = i;\r
+ }\r
+ nullMarkBound ();\r
+}\r
+}\r
+\r
+/************************************************************\r
+ After screen movement (such as scrolling), this\r
+ finds the proper location of the cursor in relationship\r
+ to the portion of the file currently displayed.\r
+*************************************************************/\r
+\r
+void findCursor (void)\r
+{\r
+ /* locates cursor based on oBufInsert\r
+ - might be off screen - if it is, this\r
+ will adjust screen */\r
+\r
+unsigned long i, j;\r
+\r
+ i = pEdit->iRowMin;\r
+ while ((i <= pEdit->iRowMax) && (pEdit->oBufInsert >= pEdit->Line[i]))\r
+ i++;\r
+ pEdit->iLine = i - 1;\r
+ if (pEdit->iLine < pEdit->iRowMin)\r
+ pEdit->iLine = pEdit->iRowMin;\r
+\r
+ j = pEdit->iLine;\r
+ if ((pEdit->Line[j+1] < EMPTY) &&\r
+ (pEdit->oBufInsert >= pEdit->Line[j+1]))\r
+ pEdit->iLine = pEdit->iLine + 1;\r
+ j = pEdit->iLine;\r
+ pEdit->iCol = pEdit->oBufInsert - pEdit->Line[j] + pEdit->iColMin;\r
+ if (pEdit->iLine > pEdit->iRowMax + 1)\r
+ pEdit->iLine = pEdit->iRowMax;\r
+}\r
+\r
+/************************************************************\r
+ This readjusts iCol & iLine to get them back in sync with\r
+ oBufInsert if oBufInsert is on screen. If oBufInsert is\r
+ not onscreen, this makes it so it is!\r
+*************************************************************/\r
+\r
+void coordCursor_oBuf (void)\r
+{\r
+unsigned long oBuf, i;\r
+\r
+ i = pEdit->iRowMax+1;\r
+ if ((pEdit->oBufInsert >= pEdit->oBufLine0) &&\r
+ (pEdit->oBufInsert < pEdit->Line[i])) {\r
+\r
+ /* if bogus line, guarantee end of good */\r
+\r
+ i = pEdit->iLine;\r
+ if (pEdit->Line[i] == EMPTY)\r
+ pEdit->iCol = pEdit->iColMax;\r
+\r
+ /* if bogus line, find last good line */\r
+\r
+ while ((pEdit->Line[i] == EMPTY) &&\r
+ (i > pEdit->iRowMin)) {\r
+ pEdit->iLine--;\r
+ i = pEdit->iLine;\r
+ }\r
+\r
+ i = pEdit->iLine;\r
+ pEdit->oBufInsert =\r
+ pEdit->Line[i] + pEdit->iCol - pEdit->iColMin;\r
+ if (pEdit->oBufInsert > pEdit->oBufLast)\r
+ pEdit->oBufInsert = pEdit->oBufLast;\r
+ oBuf = pEdit->Line[i+1];\r
+ if (pEdit->oBufInsert > oBuf)\r
+ pEdit->oBufInsert = oBuf; /* get to potential insert - is, if\r
+ prev char <> CR, is not if prev = CR */\r
+ if (pEdit->oBufInsert == oBuf) /* if at EOL */\r
+ if (pEdit->pBuf[oBuf-1] == 0x0A)\r
+ pEdit->oBufInsert--;\r
+ pEdit->iCol = pEdit->oBufInsert + pEdit->iColMin -\r
+ pEdit->Line[i];\r
+ }\r
+}\r
+\r
+\r
+/************************************************************\r
+ Adjusts oBufLine0 to make sure that oBufInsert is on the screen.\r
+ This also sets all of the Line array values (Line[n])\r
+*************************************************************/\r
+\r
+void makeOnScreen (void)\r
+{\r
+unsigned long i, j, k;\r
+\r
+ /* If oBufInsert is not on screen (above current display)\r
+ then find the previous line beginning and make that\r
+ the new first line 1 until it is!\r
+ */\r
+\r
+ while (pEdit->oBufInsert < pEdit->oBufLine0)\r
+ pEdit->oBufLine0 = findPrevLine (pEdit->oBufLine0);\r
+\r
+ /* Set Line[iRowMin] to match oBufLine0 */\r
+\r
+ k = pEdit->iRowMin;\r
+ pEdit->Line[k] = pEdit->oBufLine0;\r
+\r
+ /* Set all subsequent Line[s] by calling findEol for each. */\r
+\r
+ for (i = k; i <= pEdit->iRowMax; i++) {\r
+ if (pEdit->Line[i] < EMPTY) {\r
+ j = findEol (pEdit->Line[i]);\r
+ if (j < pEdit->oBufLast) /* j = offset of last char of line */\r
+ pEdit->Line[i+1] = j + 1;\r
+ else\r
+ for (j=i+1; j<NLINESMAX; j++)\r
+ pEdit->Line[j] = EMPTY;\r
+ }\r
+ }\r
+\r
+ /* If the InsertPoint (your cursor position) is past\r
+ the last line then do this junk to fix it */\r
+\r
+ j = pEdit->iRowMin;\r
+ k = pEdit->iRowMax;\r
+ while (pEdit->oBufInsert >= pEdit->Line[k+1]) {\r
+ for (i=j; i<=k; i++)\r
+ pEdit->Line[i] = pEdit->Line[i+1];\r
+ pEdit->oBufLine0 = pEdit->Line[j];\r
+\r
+ i = findEol (pEdit->Line[k]); /* EOL of iRowMax */\r
+ if (i < pEdit->oBufLast) /* i = offset of last char of line */\r
+ pEdit->Line[k+1] = i + 1;\r
+ else pEdit->Line[k+1] = EMPTY;\r
+ }\r
+}\r
+\r
+/************************************************************\r
+ Redisplay all data on the screen.\r
+*************************************************************/\r
+\r
+void showScreen (char *pFiller)\r
+{\r
+unsigned long i, iLn, cb, oBuf;\r
+char *pBuff;\r
+\r
+ pBuff = pEdit->pBuf;\r
+\r
+ makeOnScreen (); /* oBufInsert on screen - Line correct */\r
+\r
+ for (iLn = pEdit->iRowMin; iLn <= pEdit->iRowMax; iLn++) {\r
+\r
+ /* i = offset in buf of last char on line */\r
+ /* cb = nchars in line */\r
+\r
+ cb = 0;\r
+ oBuf = pEdit->Line[iLn];\r
+ if (oBuf < EMPTY) {\r
+ if (pEdit->Line[iLn+1] < EMPTY)\r
+ i = pEdit->Line[iLn+1] - 1;\r
+ else\r
+ i = pEdit->oBufLast;\r
+ cb = i - oBuf + 1; /* Make size, not offset */\r
+\r
+\r
+ if ((!pEdit->fVisible) &&\r
+ (pBuff[i] == 0x0A) &&\r
+ (cb))\r
+ cb--;\r
+ }\r
+\r
+ if ((cb) && (oBuf < EMPTY))\r
+ PutVidChars (pEdit->iColMin, iLn, pBuff+oBuf, cb,\r
+ pEdit->iAttrNorm);\r
+\r
+ if (cb < pEdit->sLine)\r
+ PutVidChars (pEdit->iColMin+cb, iLn, pFiller, pEdit->sLine-cb,\r
+ pEdit->iAttrNorm);\r
+\r
+ doMark (iLn);\r
+ }\r
+}\r
+\r
+/************************************************************\r
+ Resets all variables for the editor and clears the\r
+ buffers. Called before use and after closure.\r
+*************************************************************/\r
+\r
+void clearbuf (void)\r
+{\r
+unsigned long i;\r
+char *pBuff;\r
+\r
+ pBuff = pEdit->pBuf;\r
+ FillData(filler, 80, 0x20);\r
+ for (i=0; i<NLINESMAX; i++)\r
+ pEdit->Line[i] = EMPTY;\r
+ i = pEdit->iRowMin;\r
+ pEdit->Line[i] = 0;\r
+\r
+ pEdit->iCol = pEdit->iColMin;\r
+ pEdit->iLine = pEdit->iRowMin;\r
+ pEdit->bSpace = 0x20;\r
+ pEdit->fVisible = FALSE;\r
+ fModified = 0;\r
+ fOvertype = FALSE;\r
+ pEdit->oBufLast = 0;\r
+ pEdit->oBufInsert = 0;\r
+ pEdit->oBufLine0 = 0;\r
+ pBuff[pEdit->oBufLast] = 0x0F; /* the SUN */\r
+ nullMarkBound();\r
+ normAttr ();\r
+}\r
+\r
+/************************************************************\r
+ This is the main editing function. It is a HUGE while\r
+ loop which reads keystrokes and processes them.\r
+*************************************************************/\r
+\r
+void Editor(char *pbExitRet)\r
+{\r
+unsigned long i, j, k, key;\r
+char fSpecInsert; /* TRUE = insert no matter what fOvertype is */\r
+char fScreen; /* TRUE = display entire screen */\r
+char fDone;\r
+unsigned char b;\r
+char *pBuff, *pBuffWork;\r
+long exch;\r
+\r
+char testkey[10];\r
+\r
+ pBuff = pEdit->pBuf;\r
+ pBuffWork = pEdit->pBufWork;\r
+ fDone = FALSE;\r
+\r
+ if (pEdit->fVisible)\r
+ {\r
+ pEdit->bSpace = 0x07;\r
+ for (i=0; i <=pEdit->oBufLast; i++)\r
+ if (pBuff[i] == 0x20)\r
+ pBuff[i] = pEdit->bSpace;\r
+ } else\r
+ pEdit->bSpace = 0x20;\r
+\r
+\r
+ normAttr ();\r
+ fScreen = TRUE;\r
+\r
+ pBuff[pEdit->oBufLast] = 0x0F; /* the SUN */\r
+\r
+ erc = AllocExch(&exch);\r
+\r
+ while (!fDone)\r
+ {\r
+ if (fScreen)\r
+ {\r
+ showScreen (filler); /* we know oBufInsert on screen */\r
+ findCursor ();\r
+ fScreen = FALSE;\r
+ }\r
+ SetXY (pEdit->iCol, pEdit->iLine);\r
+ FillData(aStat, 80, 0x20);\r
+ i= CountEols() + pEdit->iLine;\r
+ sprintf(aStat,"C: %02d L: %05d nChars: %05d",\r
+ pEdit->iCol, i, pEdit->oBufLast);\r
+ if (cbFilename)\r
+ CopyData(Filename, &aStat[40], cbFilename);\r
+ if (fOvertype)\r
+ CopyData("OVR", &aStat[77], 3);\r
+ else\r
+ CopyData("INS", &aStat[77], 3);\r
+ PutVidChars (0, 0, aStat, 80, STATVID);\r
+\r
+ fSpecInsert = FALSE; /* True if char should be inserted even if fOver */\r
+\r
+ CheckErc(7, ReadKbd (&key, 1)); /* Wait for char */\r
+\r
+ b = key & 0xff;\r
+\r
+ if (key & 0x3000) /* ALT key is down */\r
+ {\r
+ switch (b)\r
+ {\r
+\r
+ case 0x42: /* ALT-B -- Beginning of Text */\r
+ case 0x62: /* ALT-b */\r
+ pEdit->oBufLine0 = 0;\r
+ pEdit->oBufInsert = 0;\r
+ pEdit->iCol = pEdit->iColMin;\r
+ pEdit->iLine = pEdit->iRowMin;\r
+ fScreen = TRUE;\r
+ break;\r
+\r
+ case 0x43: /* ALT-C -- CloseFile */\r
+ case 0x63: /* ALT-c */\r
+ SaveFile(TRUE, TRUE);\r
+ fScreen = TRUE;\r
+ break;\r
+ case 0x45: /* ALT-E -- End of Text */\r
+ case 0x65: /* ALT-e */\r
+ pEdit->oBufInsert = pEdit->oBufLast;\r
+ coordCursor_oBuf ();\r
+ fScreen = TRUE;\r
+ break;\r
+ case 0x01: /* ALT-UP Arrow - Cursor to top of screen */\r
+ pEdit->iLine = pEdit->iRowMin;\r
+ pEdit->iCol = pEdit->iColMin;\r
+ break;\r
+ case 0x02: /* ALT Down Arrow - Cursor to bottom of screen */\r
+ pEdit->iLine = pEdit->iRowMin;\r
+ i = pEdit->iLine;\r
+ while ((pEdit->Line[i+1] < EMPTY) &&\r
+ (i < pEdit->iRowMax)) {\r
+ pEdit->iLine++;\r
+ i = pEdit->iLine;\r
+ }\r
+ pEdit->iCol = pEdit->iColMax;\r
+ coordCursor_oBuf ();\r
+ break;\r
+ case 0x03: /* ALT-Left Arrow - Cursor to BOL */\r
+ pEdit->iCol = pEdit->iColMin;\r
+ break;\r
+ case 0x04: /* ALT-Right Arrow - Cursor to EOL */\r
+ i = pEdit->iLine;\r
+ if (pEdit->Line[i+1] < EMPTY) {\r
+ pEdit->iCol =\r
+ pEdit->iColMin +\r
+ pEdit->Line[i+1] -\r
+ pEdit->Line[i];\r
+ i = pEdit->iLine+1;\r
+ if ((pBuff[pEdit->Line[i]-1] == 0x0A)\r
+ && (pEdit->iCol > pEdit->iColMin))\r
+ pEdit->iCol--;\r
+ }\r
+ else pEdit->iCol = pEdit->iColMin +\r
+ pEdit->oBufLast - pEdit->Line[i];\r
+ break;\r
+\r
+ case 0x56: /* ALT-V Make nontext chars Visible/Invisible */\r
+ case 0x76: /* ALT-v */\r
+ if (pEdit->fVisible) {\r
+ for (i=0; i <= pEdit->oBufLast; i++)\r
+ if (pBuff[i] == 0x07)\r
+ pBuff[i] = 0x20;\r
+ pEdit->fVisible = FALSE;\r
+ pEdit->bSpace = 0x20;\r
+ } else {\r
+ for (i=0; i<=pEdit->oBufLast; i++)\r
+ if (pBuff[i] == 0x20)\r
+ pBuff[i] = 0x07;\r
+ pEdit->fVisible = TRUE;\r
+ pEdit->bSpace = 0x07;\r
+ }\r
+ fScreen = TRUE;\r
+ break;\r
+ case 0x4F: /* ALT-O OpenFile */\r
+ case 0x6F: /* ALT-o */\r
+ if (!fh) {\r
+ clearbuf();\r
+ OpenAFile(0);\r
+ fScreen = TRUE;\r
+ }\r
+ break;\r
+ case 0x51: /* ALT Q - Quit */\r
+ case 0x71:\r
+ SaveFile(TRUE, TRUE);\r
+ fDone = TRUE;\r
+ break;\r
+ case 0x53: /* ALT S - SaveFile */\r
+ case 0x73: /* ALT s */\r
+ SaveFile(FALSE, FALSE);\r
+ fScreen = TRUE;\r
+ break;\r
+ case 0x7F: /* ALT Delete (Delete Marked Block) */\r
+ if (pEdit->oBufMark < EMPTY) {\r
+ deleteData ();\r
+ fScreen = TRUE;\r
+ }\r
+ break;\r
+ default:\r
+ break;\r
+ }\r
+ }\r
+\r
+ else if (key & 0x0300) /* CTRL key is down */\r
+ {\r
+\r
+\r
+ }\r
+\r
+ /* Standard editing keys including LF */\r
+\r
+ else if (((b >= 0x20) && (b <= 0x7E)) || (b == 0x0D))\r
+ {\r
+ coordCursor_oBuf ();\r
+ if (b == 0x20)\r
+ b = pEdit->bSpace;\r
+ if (b == 0x0D)\r
+ b = 0x0A;\r
+ /* Don't overwrite CR */\r
+ if (pBuff[pEdit->oBufInsert] == 0x0A)\r
+ fSpecInsert = TRUE;\r
+ if (!(putInBuf (b, fOvertype, fSpecInsert)))\r
+ Beep();\r
+ findCursor ();\r
+ fScreen = TRUE;\r
+\r
+ }\r
+\r
+ else if (key & 0x0C00) { /* SHIFT key is down & NOT letter keys */\r
+ switch (b)\r
+ {\r
+ case 0x03: /* SHIFT Left */\r
+ if (pEdit->iCol > pEdit->iColMin + 5)\r
+ pEdit->iCol -= 5;\r
+ else\r
+ if (pEdit->iCol > pEdit->iColMin)\r
+ pEdit->iCol--;\r
+ break;\r
+ case 0x04: /* SHIFT Right */\r
+ if (pEdit->iCol < pEdit->iColMax - 5)\r
+ pEdit->iCol += 5;\r
+ else\r
+ if (pEdit->iCol < pEdit->iColMax)\r
+ pEdit->iCol++;\r
+ break;\r
+ default:\r
+ break;\r
+ }\r
+ }\r
+\r
+ else { /* Unshifted editing keys */\r
+ switch (b) {\r
+ case 0x08: /* Backspace */\r
+ if (pEdit->oBufLast) {\r
+ coordCursor_oBuf ();\r
+ if (pEdit->oBufInsert) {\r
+ pEdit->oBufInsert = pEdit->oBufInsert - 1;\r
+ if (!fOvertype) {\r
+ CopyData(pBuff,\r
+ pBuffWork,\r
+ pEdit->oBufLast+1);\r
+ CopyData(&pBuffWork[pEdit->oBufInsert+1],\r
+ &pBuff[pEdit->oBufInsert],\r
+ pEdit->oBufLast-pEdit->oBufInsert);\r
+ pBuff[pEdit->oBufLast] = 0;\r
+ pEdit->oBufLast = pEdit->oBufLast - 1;\r
+ if ((pEdit->oBufMark == pEdit->oBufBound) &&\r
+ (pEdit->oBufMark == pEdit->oBufInsert))\r
+ nullMarkBound ();\r
+ if (pEdit->oBufMark < EMPTY) {\r
+ if (pEdit->oBufInsert <= pEdit->oBufMark)\r
+ pEdit->oBufMark--;\r
+ if (pEdit->oBufInsert <= pEdit->oBufBound)\r
+ pEdit->oBufBound--;\r
+ }\r
+ }\r
+ }\r
+ if (pEdit->oBufInsert < pEdit->oBufLine0)\r
+ pEdit->oBufLine0 = findPrevLine (pEdit->oBufLine0);\r
+ fScreen = TRUE;\r
+ fModified = TRUE;\r
+ }\r
+ break;\r
+ case 0x06: /* Home - Cursor to BOL */\r
+ pEdit->iCol = pEdit->iColMin;\r
+ break;\r
+ case 0x09: /* Tab */\r
+ if (pEdit->oBufLast + pEdit->iTabNorm < pEdit->iBufMax)\r
+ {\r
+ coordCursor_oBuf();\r
+ j = pEdit->iTabNorm - (pEdit->iCol % pEdit->iTabNorm);\r
+ for (i=1; i <=j; i++)\r
+ putInBuf (pEdit->bSpace, FALSE, FALSE);\r
+ fScreen = TRUE;\r
+ }\r
+ break;\r
+ case 0x10: /* F2 -- UNMARK BLOCK */\r
+ nullMarkBound ();\r
+ break;\r
+ case 0x11: /* F3 -- Begin Block */\r
+ if (pEdit->oBufLast > 0) {\r
+ coordCursor_oBuf ();\r
+ pEdit->oBufMark = pEdit->oBufInsert;\r
+ i = pEdit->iLine;\r
+ if (pEdit->oBufMark >= pEdit->Line[i+1])\r
+ pEdit->oBufMark = pEdit->oBufMark - 1;\r
+ if (pEdit->oBufMark == pEdit->oBufLast)\r
+ pEdit->oBufMark = pEdit->oBufLast - 1;\r
+ pEdit->oBufBound = pEdit->oBufMark;\r
+ fScreen = TRUE;\r
+ }\r
+ break;\r
+ case 0x12: /* F4 -- End Block */\r
+ if (pEdit->oBufMark < EMPTY) {\r
+ coordCursor_oBuf ();\r
+ pEdit->oBufBound = pEdit->oBufInsert;\r
+ i = pEdit->iLine;\r
+ if (pEdit->oBufBound >= pEdit->Line[i+1])\r
+ pEdit->oBufBound--;\r
+ if (pEdit->oBufBound == pEdit->oBufLast)\r
+ pEdit->oBufBound = pEdit->oBufLast - 1;\r
+ fScreen = TRUE;\r
+ }\r
+ break;\r
+ case 0x17: /* F9 - MOVE */\r
+ coordCursor_oBuf ();\r
+ moveData ();\r
+ if (pEdit->oBufInsert < pEdit->oBufLine0)\r
+ pEdit->oBufLine0 = pEdit->oBufInsert;\r
+ fScreen = TRUE;\r
+ break;\r
+ case 0x18: /* F10 - COPY */\r
+ coordCursor_oBuf ();\r
+ CopyIt ();\r
+ coordCursor_oBuf ();\r
+ fScreen = TRUE;\r
+ break;\r
+ case 0x0C: /* Page Down */\r
+ coordCursor_oBuf ();\r
+ i = pEdit->iRowMax;\r
+ while ((pEdit->Line[i] == EMPTY) && (i > pEdit->iRowMin))\r
+ i--;\r
+ pEdit->oBufLine0 = pEdit->Line[i];\r
+ /*always keep onScreen*/\r
+ if (pEdit->oBufInsert < pEdit->oBufLine0)\r
+ pEdit->oBufInsert = pEdit->oBufLine0;\r
+ pEdit->iLine = pEdit->iRowMin;\r
+ pEdit->iCol = pEdit->iColMin;\r
+ fScreen = TRUE;\r
+ break;\r
+ case 0x05: /* Page Up */\r
+ if (pEdit->oBufLine0) {\r
+ coordCursor_oBuf ();\r
+ j = pEdit->iRowMax - pEdit->iRowMin;\r
+ i = pEdit->oBufLine0;\r
+ k = pEdit->iLine; /*fix for scrolling when iLine=iRowMax */\r
+ do {\r
+ i = findPrevLine (i);\r
+ j--;\r
+ k--;\r
+ }\r
+ while ((j > 0) && (i > 0));\r
+ pEdit->oBufLine0 = i;\r
+ /*fix for scroll when iLine=iRowMax*/\r
+ if (pEdit->iLine == pEdit->iRowMax)\r
+ pEdit->oBufInsert = pEdit->Line[k];\r
+ /*keep on screen*/\r
+ i = pEdit->iRowMax;\r
+ if (pEdit->oBufInsert >= pEdit->Line[i+1])\r
+ pEdit->oBufInsert = pEdit->Line[i];\r
+ fScreen = TRUE;\r
+ }\r
+ break;\r
+ case 0x01: /* Up */\r
+ if (pEdit->iLine > pEdit->iRowMin) {\r
+ pEdit->iLine--;\r
+ } else { /* scroll screen down if we can */\r
+ i = pEdit->oBufLine0;\r
+ if (i > 0) {\r
+ i = findPrevLine (i);\r
+ pEdit->oBufLine0 = i;\r
+ pEdit->oBufInsert = i;\r
+ fScreen = TRUE;\r
+ }\r
+ }\r
+ break;\r
+ case 0x02: /* Down */\r
+ i = pEdit->iLine;\r
+ if ((pEdit->Line[i+1] < EMPTY) && /*Down Arrow*/\r
+ (i < pEdit->iRowMax)) {\r
+ pEdit->iLine++;\r
+ }\r
+ else { /* ELSE scroll screen UP if we can */\r
+ i = pEdit->iRowMax;\r
+ if (pEdit->Line[i+1] < EMPTY) {\r
+ pEdit->oBufInsert = pEdit->Line[i+1];\r
+ i = pEdit->iCol;\r
+ j = pEdit->iLine;\r
+ coordCursor_oBuf ();\r
+ pEdit->iCol = i;\r
+ pEdit->iLine = j;\r
+ fScreen = TRUE;\r
+ }\r
+ }\r
+ break;\r
+ case 0x03: /* Left */\r
+ if (pEdit->iCol > pEdit->iColMin) { /*Left Arrow*/\r
+ pEdit->iCol--;\r
+ }\r
+ break;\r
+ case 0x04: /* Right */\r
+ if (pEdit->iCol < pEdit->iColMax) {\r
+ pEdit->iCol++;\r
+ }\r
+ break;\r
+ case 0x0E: /* Insert */\r
+ if (fOvertype)\r
+ fOvertype = FALSE;\r
+ else fOvertype = TRUE;\r
+ break;\r
+ case 0x7F: /* Delete */\r
+ coordCursor_oBuf ();\r
+ if ((pEdit->oBufLast) &&\r
+ (pEdit->oBufLast > pEdit->oBufInsert)) {\r
+ CopyData(pBuff,\r
+ pBuffWork,\r
+ pEdit->oBufLast+1);\r
+ CopyData(&pBuffWork[pEdit->oBufInsert+1],\r
+ &pBuff[pEdit->oBufInsert],\r
+ pEdit->oBufLast-pEdit->oBufInsert);\r
+ pBuff[pEdit->oBufLast] = 0;\r
+ pEdit->oBufLast--;\r
+ if ((pEdit->oBufInsert == pEdit->oBufMark) &&\r
+ (pEdit->oBufMark == pEdit->oBufBound))\r
+ nullMarkBound ();\r
+ if (pEdit->oBufMark < EMPTY) {\r
+ if (pEdit->oBufInsert < pEdit->oBufMark)\r
+ pEdit->oBufMark--;\r
+ if (pEdit->oBufInsert < pEdit->oBufBound)\r
+ pEdit->oBufBound--;\r
+ if (pEdit->oBufMark == pEdit->oBufLast)\r
+ pEdit->oBufMark--;\r
+ if (pEdit->oBufBound == pEdit->oBufLast)\r
+ pEdit->oBufBound--;\r
+ }\r
+ fScreen = TRUE;\r
+ fModified = TRUE;\r
+ }\r
+ break;\r
+ default:\r
+ break;\r
+ }\r
+ }\r
+ } /* Not fDone */\r
+\r
+\r
+ for (i=pEdit->iRowMin; i <=pEdit->iRowMax; i++)\r
+ PutVidAttrs (pEdit->iColMin, i, pEdit->sLine+1, 0); /* REM buffer column */\r
+\r
+ if (fh) {\r
+ if (pEdit->fVisible) /* fix visible characters */\r
+ for (i=0; i <=pEdit->iBufMax; i++)\r
+ if (pBuff[i] == 0x07)\r
+ pBuff[i] = 0x20;\r
+ pBuff[pEdit->oBufLast] = 0;\r
+ if (fModified) {\r
+ erc = CheckErc(6, SetFileLFA(fh, 0));\r
+ if (!erc)\r
+ erc = CheckErc(5, SetFileSize(fh,pEdit->oBufLast));\r
+ if (!erc)\r
+ erc = CheckErc(3, WriteBytes (fh, pBuf1, pEdit->oBufLast, &i));\r
+ fModified = 0;\r
+ }\r
+ CloseFile(fh);\r
+ cbFilename = 0;\r
+ }\r
+\r
+ *pbExitRet = b;\r
+ return;\r
+}\r
+\r
+/************************************************************\r
+ This is the main entry point for the editor. It aloocates\r
+ two buffers of equal size(a main and a working buffer),\r
+ and then checks for a single parameter which should be the\r
+ name of the file to edit.\r
+*************************************************************/\r
+\r
+void main(U32 argc, U8 *argv[])\r
+{\r
+long i;\r
+\r
+ ClrScr();\r
+ SetJobName("Editor", 6);\r
+ fh = 0;\r
+\r
+ pEdit = &EdRec;\r
+ erc = AllocPage(32, &pBuf1); /* 32 pages = 128K */\r
+ erc = AllocPage(32, &pBuf2);\r
+\r
+ pEdit->pBuf = pBuf1;\r
+ pEdit->pBufWork = pBuf2;\r
+ pEdit->iBufMax = 131071; /*sBuf - 1 */\r
+ pEdit->iColMin = 0; /*Screen coordinates*/\r
+ pEdit->iColMax = 79;\r
+ pEdit->iRowMin = 1;\r
+ pEdit->iRowMax = 23;\r
+ pEdit->sLine = 80; /* iColMax-iColMin+1 */\r
+ pEdit->bSpace = 0x20;\r
+ pEdit->fVisible = FALSE;\r
+ pEdit->iAttrMark = MARKVID; /* Rev Vid*/\r
+ pEdit->iAttrNorm = EDVID; /* Rev Vid Half Bright */\r
+ pEdit->iTabNorm = 4; /* Tabs every 4th column */\r
+ pEdit->oBufLine0 = 0; /* oBufLine0 */\r
+ pEdit->iCol = 0; /* cursor, 0..sLine-1 */\r
+ pEdit->iLine = 0; /* cursor, 0..cLines-1 */\r
+ pEdit->oBufInsert = 0; /* offset of next char in */\r
+ pEdit->oBufLast = 0; /* offset+1 of last char */\r
+ pEdit->oBufMark = EMPTY;\r
+ pEdit->oBufBound = EMPTY;\r
+\r
+ SetNormVid(NORMVID);\r
+\r
+ FillData(filler, 80, 0x20);\r
+ for (i=0; i<NLINESMAX; i++)\r
+ pEdit->Line[i] = EMPTY;\r
+ i = pEdit->iRowMin;\r
+ pEdit->Line[i] = 0;\r
+\r
+ fModified = 0;\r
+ fOvertype = FALSE; /* Set Overtype OFF */\r
+\r
+ if (argc > 1)\r
+ {\r
+ OpenAFile(argv[1]);\r
+ }\r
+\r
+ Editor(&b);\r
+ ExitJob(0);\r
+}\r
projects / mmurtl / commitdiff