ed: convert style to bbox's. No code changes.

This commit is contained in:
Denis Vlasenko 2006-11-30 20:57:50 +00:00
parent 002526481e
commit 610c4aa197

View File

@ -7,14 +7,6 @@
* The "ed" built-in command (much simplified)
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <time.h>
#include <ctype.h>
#include <sys/param.h>
#include "busybox.h"
#define USERSIZE 1024 /* max line length typed in by user */
@ -88,8 +80,7 @@ static void doCommands(void)
char *endbuf, *newname, buf[USERSIZE];
int len, num1, num2, have1, have2;
while (TRUE)
{
while (TRUE) {
printf(": ");
fflush(stdout);
@ -103,15 +94,12 @@ static void doCommands(void)
endbuf = &buf[len - 1];
if (*endbuf != '\n')
{
if (*endbuf != '\n') {
bb_error_msg("command line too long");
do
{
do {
len = fgetc(stdin);
}
while ((len != EOF) && (len != '\n'));
} while ((len != EOF) && (len != '\n'));
continue;
}
@ -129,8 +117,7 @@ static void doCommands(void)
have1 = FALSE;
have2 = FALSE;
if ((curNum == 0) && (lastNum > 0))
{
if ((curNum == 0) && (lastNum > 0)) {
curNum = 1;
curLine = lines.next;
}
@ -141,8 +128,7 @@ static void doCommands(void)
while (isblank(*cp))
cp++;
if (*cp == ',')
{
if (*cp == ',') {
cp++;
if (!getNum(&cp, &have2, &num2))
@ -164,8 +150,7 @@ static void doCommands(void)
if (!have2)
num2 = num1;
switch (*cp++)
{
switch (*cp++) {
case 'a':
addLines(num1 + 1);
break;
@ -180,8 +165,7 @@ static void doCommands(void)
break;
case 'f':
if (*cp && !isblank(*cp))
{
if (*cp && !isblank(*cp)) {
bb_error_msg("bad file command");
break;
}
@ -189,20 +173,17 @@ static void doCommands(void)
while (isblank(*cp))
cp++;
if (*cp == '\0')
{
if (*cp == '\0') {
if (fileName)
printf("\"%s\"\n", fileName);
else
printf("No file name\n");
break;
}
newname = strdup(cp);
if (newname == NULL)
{
if (newname == NULL) {
bb_error_msg("no memory for file name");
break;
}
@ -221,8 +202,7 @@ static void doCommands(void)
while (isblank(*cp))
cp++;
if ((*cp < 'a') || (*cp > 'a') || cp[1])
{
if ((*cp < 'a') || (*cp > 'a') || cp[1]) {
bb_error_msg("bad mark name");
break;
}
@ -242,8 +222,7 @@ static void doCommands(void)
while (isblank(*cp))
cp++;
if (have1 || *cp)
{
if (have1 || *cp) {
bb_error_msg("bad quit command");
break;
}
@ -267,8 +246,7 @@ static void doCommands(void)
break;
case 'r':
if (*cp && !isblank(*cp))
{
if (*cp && !isblank(*cp)) {
bb_error_msg("bad read command");
break;
}
@ -276,8 +254,7 @@ static void doCommands(void)
while (isblank(*cp))
cp++;
if (*cp == '\0')
{
if (*cp == '\0') {
bb_error_msg("no file name");
break;
}
@ -298,8 +275,7 @@ static void doCommands(void)
break;
case 'w':
if (*cp && !isblank(*cp))
{
if (*cp && !isblank(*cp)) {
bb_error_msg("bad write command");
break;
}
@ -315,8 +291,7 @@ static void doCommands(void)
if (*cp == '\0')
cp = fileName;
if (cp == NULL)
{
if (cp == NULL) {
bb_error_msg("no file name specified");
break;
}
@ -325,8 +300,7 @@ static void doCommands(void)
break;
case 'z':
switch (*cp)
{
switch (*cp) {
case '-':
printLines(curNum-21, curNum, FALSE);
break;
@ -340,8 +314,7 @@ static void doCommands(void)
break;
case '.':
if (have1)
{
if (have1) {
bb_error_msg("no arguments allowed");
break;
}
@ -360,8 +333,7 @@ static void doCommands(void)
break;
case '\0':
if (have1)
{
if (have1) {
printLines(num2, num2, FALSE);
break;
}
@ -390,10 +362,8 @@ static void subCommand(const char * cmd, int num1, int num2)
LINE *lp, *nlp;
int globalFlag, printFlag, didSub, needPrint;
if ((num1 < 1) || (num2 > lastNum) || (num1 > num2))
{
if ((num1 < 1) || (num2 > lastNum) || (num1 > num2)) {
bb_error_msg("bad line range for substitute");
return;
}
@ -408,10 +378,8 @@ static void subCommand(const char * cmd, int num1, int num2)
strcpy(buf, cmd);
cp = buf;
if (isblank(*cp) || (*cp == '\0'))
{
if (isblank(*cp) || (*cp == '\0')) {
bb_error_msg("bad delimiter for substitute");
return;
}
@ -420,10 +388,8 @@ static void subCommand(const char * cmd, int num1, int num2)
cp = strchr(cp, delim);
if (cp == NULL)
{
if (cp == NULL) {
bb_error_msg("missing 2nd delimiter for substitute");
return;
}
@ -437,8 +403,7 @@ static void subCommand(const char * cmd, int num1, int num2)
else
cp = "";
while (*cp) switch (*cp++)
{
while (*cp) switch (*cp++) {
case 'g':
globalFlag = TRUE;
break;
@ -449,16 +414,12 @@ static void subCommand(const char * cmd, int num1, int num2)
default:
bb_error_msg("unknown option for substitute");
return;
}
if (*oldStr == '\0')
{
if (searchString[0] == '\0')
{
if (*oldStr == '\0') {
if (searchString[0] == '\0') {
bb_error_msg("no previous search string");
return;
}
@ -479,14 +440,11 @@ static void subCommand(const char * cmd, int num1, int num2)
offset = 0;
nlp = NULL;
while (num1 <= num2)
{
while (num1 <= num2) {
offset = findString(lp, oldStr, oldLen, offset);
if (offset < 0)
{
if (needPrint)
{
if (offset < 0) {
if (needPrint) {
printLines(num1, num1, FALSE);
needPrint = FALSE;
}
@ -506,12 +464,10 @@ static void subCommand(const char * cmd, int num1, int num2)
* If the replacement string is the same size or shorter
* than the old string, then the substitution is easy.
*/
if (deltaLen <= 0)
{
if (deltaLen <= 0) {
memcpy(&lp->data[offset], newStr, newLen);
if (deltaLen)
{
if (deltaLen) {
memcpy(&lp->data[offset + newLen],
&lp->data[offset + oldLen],
lp->len - offset - oldLen);
@ -524,8 +480,7 @@ static void subCommand(const char * cmd, int num1, int num2)
if (globalFlag)
continue;
if (needPrint)
{
if (needPrint) {
printLines(num1, num1, FALSE);
needPrint = FALSE;
}
@ -543,10 +498,8 @@ static void subCommand(const char * cmd, int num1, int num2)
*/
nlp = (LINE *) malloc(sizeof(LINE) + lp->len + deltaLen);
if (nlp == NULL)
{
if (nlp == NULL) {
bb_error_msg("cannot get memory for line");
return;
}
@ -576,8 +529,7 @@ static void subCommand(const char * cmd, int num1, int num2)
if (globalFlag)
continue;
if (needPrint)
{
if (needPrint) {
printLines(num1, num1, FALSE);
needPrint = FALSE;
}
@ -603,8 +555,7 @@ static int findString( const LINE * lp, const char * str, int len, int offset)
cp = &lp->data[offset];
left = lp->len - offset;
while (left >= len)
{
while (left >= len) {
ncp = memchr(cp, *str, left);
if (ncp == NULL)
@ -639,8 +590,7 @@ static void addLines(int num)
int len;
char buf[USERSIZE + 1];
while (fgets(buf, sizeof(buf), stdin))
{
while (fgets(buf, sizeof(buf), stdin)) {
if ((buf[0] == '.') && (buf[1] == '\n') && (buf[2] == '\0'))
return;
@ -649,16 +599,11 @@ static void addLines(int num)
if (len == 0)
return;
if (buf[len - 1] != '\n')
{
if (buf[len - 1] != '\n') {
bb_error_msg("line too long");
do
{
do {
len = fgetc(stdin);
}
while ((len != EOF) && (len != '\n'));
} while ((len != EOF) && (len != '\n'));
return;
}
@ -687,13 +632,11 @@ static int getNum(const char **retcp, int *retHaveNum, int *retNum)
value = 0;
sign = 1;
while (TRUE)
{
while (TRUE) {
while (isblank(*cp))
cp++;
switch (*cp)
{
switch (*cp) {
case '.':
haveNum = TRUE;
num = curNum;
@ -709,10 +652,8 @@ static int getNum(const char **retcp, int *retHaveNum, int *retNum)
case '\'':
cp++;
if ((*cp < 'a') || (*cp > 'z'))
{
if ((*cp < 'a') || (*cp > 'z')) {
bb_error_msg("bad mark name");
return FALSE;
}
@ -724,8 +665,7 @@ static int getNum(const char **retcp, int *retHaveNum, int *retNum)
strcpy(str, ++cp);
endStr = strchr(str, '/');
if (endStr)
{
if (endStr) {
*endStr++ = '\0';
cp += (endStr - str);
}
@ -741,12 +681,10 @@ static int getNum(const char **retcp, int *retHaveNum, int *retNum)
break;
default:
if (!isdigit(*cp))
{
if (!isdigit(*cp)) {
*retcp = cp;
*retHaveNum = haveNum;
*retNum = value;
return TRUE;
}
@ -764,8 +702,7 @@ static int getNum(const char **retcp, int *retHaveNum, int *retNum)
while (isblank(*cp))
cp++;
switch (*cp)
{
switch (*cp) {
case '-':
sign = -1;
cp++;
@ -780,7 +717,6 @@ static int getNum(const char **retcp, int *retHaveNum, int *retNum)
*retcp = cp;
*retHaveNum = haveNum;
*retNum = value;
return TRUE;
}
}
@ -797,10 +733,8 @@ static int initEdit(void)
bufSize = INITBUF_SIZE;
bufBase = malloc(bufSize);
if (bufBase == NULL)
{
if (bufBase == NULL) {
bb_error_msg("no memory for buffer");
return FALSE;
}
@ -863,19 +797,15 @@ static int readLines(const char * file, int num)
int len, lineCount, charCount;
char *cp;
if ((num < 1) || (num > lastNum + 1))
{
if ((num < 1) || (num > lastNum + 1)) {
bb_error_msg("bad line for read");
return FALSE;
}
fd = open(file, 0);
if (fd < 0)
{
if (fd < 0) {
perror(file);
return FALSE;
}
@ -888,18 +818,14 @@ static int readLines(const char * file, int num)
printf("\"%s\", ", file);
fflush(stdout);
do
{
do {
cp = memchr(bufPtr, '\n', bufUsed);
if (cp)
{
if (cp) {
len = (cp - bufPtr) + 1;
if (!insertLine(num, bufPtr, len))
{
if (!insertLine(num, bufPtr, len)) {
close(fd);
return FALSE;
}
@ -912,22 +838,18 @@ static int readLines(const char * file, int num)
continue;
}
if (bufPtr != bufBase)
{
if (bufPtr != bufBase) {
memcpy(bufBase, bufPtr, bufUsed);
bufPtr = bufBase + bufUsed;
}
if (bufUsed >= bufSize)
{
if (bufUsed >= bufSize) {
len = (bufSize * 3) / 2;
cp = realloc(bufBase, len);
if (cp == NULL)
{
if (cp == NULL) {
bb_error_msg("no memory for buffer");
close(fd);
return FALSE;
}
@ -940,23 +862,17 @@ static int readLines(const char * file, int num)
bufUsed += cc;
bufPtr = bufBase;
}
while (cc > 0);
} while (cc > 0);
if (cc < 0)
{
if (cc < 0) {
perror(file);
close(fd);
return FALSE;
}
if (bufUsed)
{
if (!insertLine(num, bufPtr, bufUsed))
{
if (bufUsed) {
if (!insertLine(num, bufPtr, bufUsed)) {
close(fd);
return -1;
}
@ -982,10 +898,8 @@ static int writeLines(const char * file, int num1, int num2)
LINE *lp;
int fd, lineCount, charCount;
if ((num1 < 1) || (num2 > lastNum) || (num1 > num2))
{
if ((num1 < 1) || (num2 > lastNum) || (num1 > num2)) {
bb_error_msg("bad line range for write");
return FALSE;
}
@ -996,7 +910,6 @@ static int writeLines(const char * file, int num1, int num2)
if (fd < 0) {
perror(file);
return FALSE;
}
@ -1005,20 +918,15 @@ static int writeLines(const char * file, int num1, int num2)
lp = findLine(num1);
if (lp == NULL)
{
if (lp == NULL) {
close(fd);
return FALSE;
}
while (num1++ <= num2)
{
if (write(fd, lp->data, lp->len) != lp->len)
{
while (num1++ <= num2) {
if (write(fd, lp->data, lp->len) != lp->len) {
perror(file);
close(fd);
return FALSE;
}
@ -1027,15 +935,12 @@ static int writeLines(const char * file, int num1, int num2)
lp = lp->next;
}
if (close(fd) < 0)
{
if (close(fd) < 0) {
perror(file);
return FALSE;
}
printf("%d lines, %d chars\n", lineCount, charCount);
return TRUE;
}
@ -1052,10 +957,8 @@ static int printLines(int num1, int num2, int expandFlag)
const char *cp;
int ch, count;
if ((num1 < 1) || (num2 > lastNum) || (num1 > num2))
{
if ((num1 < 1) || (num2 > lastNum) || (num1 > num2)) {
bb_error_msg("bad line range for print");
return FALSE;
}
@ -1064,10 +967,8 @@ static int printLines(int num1, int num2, int expandFlag)
if (lp == NULL)
return FALSE;
while (num1 <= num2)
{
if (!expandFlag)
{
while (num1 <= num2) {
if (!expandFlag) {
write(1, lp->data, lp->len);
setCurNum(num1++);
lp = lp->next;
@ -1085,24 +986,20 @@ static int printLines(int num1, int num2, int expandFlag)
if ((count > 0) && (cp[count - 1] == '\n'))
count--;
while (count-- > 0)
{
while (count-- > 0) {
ch = *cp++;
if (ch & 0x80)
{
if (ch & 0x80) {
fputs("M-", stdout);
ch &= 0x7f;
}
if (ch < ' ')
{
if (ch < ' ') {
fputc('^', stdout);
ch += '@';
}
if (ch == 0x7f)
{
if (ch == 0x7f) {
fputc('^', stdout);
ch = '?';
}
@ -1131,19 +1028,15 @@ static int insertLine(int num, const char * data, int len)
{
LINE *newLp, *lp;
if ((num < 1) || (num > lastNum + 1))
{
if ((num < 1) || (num > lastNum + 1)) {
bb_error_msg("inserting at bad line number");
return FALSE;
}
newLp = (LINE *) malloc(sizeof(LINE) + len - 1);
newLp = malloc(sizeof(LINE) + len - 1);
if (newLp == NULL)
{
if (newLp == NULL) {
bb_error_msg("failed to allocate memory for line");
return FALSE;
}
@ -1152,14 +1045,11 @@ static int insertLine(int num, const char * data, int len)
if (num > lastNum)
lp = &lines;
else
{
else {
lp = findLine(num);
if (lp == NULL)
{
if (lp == NULL) {
free((char *) newLp);
return FALSE;
}
}
@ -1171,7 +1061,6 @@ static int insertLine(int num, const char * data, int len)
lastNum++;
dirty = TRUE;
return setCurNum(num);
}
@ -1184,10 +1073,8 @@ static int deleteLines(int num1, int num2)
LINE *lp, *nlp, *plp;
int count;
if ((num1 < 1) || (num2 > lastNum) || (num1 > num2))
{
if ((num1 < 1) || (num2 > lastNum) || (num1 > num2)) {
bb_error_msg("bad line numbers for delete");
return FALSE;
}
@ -1196,8 +1083,7 @@ static int deleteLines(int num1, int num2)
if (lp == NULL)
return FALSE;
if ((curNum >= num1) && (curNum <= num2))
{
if ((curNum >= num1) && (curNum <= num2)) {
if (num2 < lastNum)
setCurNum(num2 + 1);
else if (num1 > 1)
@ -1213,8 +1099,7 @@ static int deleteLines(int num1, int num2)
lastNum -= count;
while (count-- > 0)
{
while (count-- > 0) {
nlp = lp->next;
plp = lp->prev;
plp->next = nlp;
@ -1244,19 +1129,14 @@ static int searchLines(const char *str, int num1, int num2)
const LINE *lp;
int len;
if ((num1 < 1) || (num2 > lastNum) || (num1 > num2))
{
if ((num1 < 1) || (num2 > lastNum) || (num1 > num2)) {
bb_error_msg("bad line numbers for search");
return 0;
}
if (*str == '\0')
{
if (searchString[0] == '\0')
{
if (*str == '\0') {
if (searchString[0] == '\0') {
bb_error_msg("no previous search string");
return 0;
}
@ -1273,8 +1153,7 @@ static int searchLines(const char *str, int num1, int num2)
if (lp == NULL)
return 0;
while (num1 <= num2)
{
while (num1 <= num2) {
if (findString(lp, str, len, 0) >= 0)
return num1;
@ -1283,7 +1162,6 @@ static int searchLines(const char *str, int num1, int num2)
}
bb_error_msg("cannot find string \"%s\"", str);
return 0;
}
@ -1296,15 +1174,12 @@ static LINE *findLine(int num)
LINE *lp;
int lnum;
if ((num < 1) || (num > lastNum))
{
if ((num < 1) || (num > lastNum)) {
bb_error_msg("line number %d does not exist", num);
return NULL;
}
if (curNum <= 0)
{
if (curNum <= 0) {
curNum = 1;
curLine = lines.next;
}
@ -1315,29 +1190,24 @@ static LINE *findLine(int num)
lp = curLine;
lnum = curNum;
if (num < (curNum / 2))
{
if (num < (curNum / 2)) {
lp = lines.next;
lnum = 1;
}
else if (num > ((curNum + lastNum) / 2))
{
else if (num > ((curNum + lastNum) / 2)) {
lp = lines.prev;
lnum = lastNum;
}
while (lnum < num)
{
while (lnum < num) {
lp = lp->next;
lnum++;
}
while (lnum > num)
{
while (lnum > num) {
lp = lp->prev;
lnum--;
}
return lp;
}
@ -1357,6 +1227,5 @@ static int setCurNum(int num)
curNum = num;
curLine = lp;
return TRUE;
}