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cmd.exe: Correctly parse IF ELSE plus multipart/multiline.

This commit is contained in:
Jason Edmeades 2007-06-15 20:59:26 +01:00 committed by Alexandre Julliard
parent d4afe81c3f
commit 345cb89175
1 changed files with 41 additions and 8 deletions
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49
programs/cmd/wcmdmain.c
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@ -1909,12 +1909,17 @@ WCHAR *WCMD_ReadAndParseLine(WCHAR *optionalcmd, CMD_LIST **output, HANDLE readF
static WCHAR *extraSpace = NULL; /* Deliberately never freed */
const WCHAR remCmd[] = {'r','e','m',' ','\0'};
const WCHAR forCmd[] = {'f','o','r',' ','\0'};
const WCHAR ifCmd[] = {'i','f',' ','\0'};
const WCHAR ifElse[] = {'e','l','s','e',' ','\0'};
BOOL inRem = FALSE;
BOOL inFor = FALSE;
BOOL inIf = FALSE;
BOOL inElse= FALSE;
BOOL onlyWhiteSpace = FALSE;
BOOL lastWasWhiteSpace = FALSE;
BOOL lastWasDo = FALSE;
BOOL lastWasIn = FALSE;
BOOL lastWasDo = FALSE;
BOOL lastWasIn = FALSE;
BOOL lastWasElse = FALSE;
/* Allocate working space for a command read from keyboard, file etc */
if (!extraSpace)
@ -1952,7 +1957,7 @@ WCHAR *WCMD_ReadAndParseLine(WCHAR *optionalcmd, CMD_LIST **output, HANDLE readF
/* Certain commands need special handling */
if (curLen == 0) {
const WCHAR forDO[] = {'d','o',' ','\0'};
const WCHAR forDO[] = {'d','o',' ','\0'};
/* If command starts with 'rem', ignore any &&, ( etc */
if (CompareString (LOCALE_USER_DEFAULT, NORM_IGNORECASE | SORT_STRINGSORT,
@ -1964,6 +1969,26 @@ WCHAR *WCMD_ReadAndParseLine(WCHAR *optionalcmd, CMD_LIST **output, HANDLE readF
curPos, 4, forCmd, -1) == 2) {
inFor = TRUE;
/* If command starts with 'if' or 'else', handle ('s mid line. We should ensure this
is only true in the command portion of the IF statement, but this
should suffice for now
FIXME: Silly syntax like "if 1(==1( (
echo they equal
)" will be parsed wrong */
} else if (CompareString (LOCALE_USER_DEFAULT, NORM_IGNORECASE | SORT_STRINGSORT,
curPos, 3, ifCmd, -1) == 2) {
inIf = TRUE;
} else if (CompareString (LOCALE_USER_DEFAULT, NORM_IGNORECASE | SORT_STRINGSORT,
curPos, 5, ifElse, -1) == 2) {
inElse = TRUE;
lastWasElse = TRUE;
onlyWhiteSpace = TRUE;
memcpy(&curString[curLen], curPos, 5*sizeof(WCHAR));
curLen+=5;
curPos+=5;
continue;
/* In a for loop, the DO command will follow a close bracket followed by
whitespace, followed by DO, ie closeBracket inserts a NULL entry, curLen
is then 0, and all whitespace is skipped */
@ -2025,10 +2050,12 @@ WCHAR *WCMD_ReadAndParseLine(WCHAR *optionalcmd, CMD_LIST **output, HANDLE readF
ie start of line or just after &&, then we read until an
unquoted ) is found */
WINE_TRACE("Found '(' conditions: curLen(%d), inQ(%d), onlyWS(%d)"
", for(%d, In:%d, Do:%d)\n",
", for(%d, In:%d, Do:%d)"
", if(%d, else:%d, lwe:%d)\n",
curLen, inQuotes,
onlyWhiteSpace,
inFor, lastWasIn, lastWasDo);
inFor, lastWasIn, lastWasDo,
inIf, inElse, lastWasElse);
if (curLen == 0) {
curDepth++;
@ -2037,8 +2064,15 @@ WCHAR *WCMD_ReadAndParseLine(WCHAR *optionalcmd, CMD_LIST **output, HANDLE readF
curString[curLen++] = *curPos;
/* In a FOR loop, an unquoted '(' may occur straight after
IN or DO */
} else if (inFor && (lastWasIn || lastWasDo) && onlyWhiteSpace) {
IN or DO
In an IF statement just handle it regardless as we don't
parse the operands
In an ELSE statement, only allow it straight away after
the ELSE and whitespace
*/
} else if (inIf ||
(inElse && lastWasElse && onlyWhiteSpace) ||
(inFor && (lastWasIn || lastWasDo) && onlyWhiteSpace)) {
/* Add the current command */
thisEntry = HeapAlloc(GetProcessHeap(), 0, sizeof(CMD_LIST));
@ -2166,7 +2200,6 @@ WCHAR *WCMD_ReadAndParseLine(WCHAR *optionalcmd, CMD_LIST **output, HANDLE readF
/* If we have reached the end of the string, see if bracketing outstanding */
if (*curPos == 0x00 && curDepth > 0 && readFrom != INVALID_HANDLE_VALUE) {
inRem = FALSE;
inFor = FALSE;
isAmphersand = FALSE;
inQuotes = FALSE;
memset(extraSpace, 0x00, (MAXSTRING+1) * sizeof(WCHAR));