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sh: Make checkend() a real function instead of an emulated nested function.

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No functional change is intended, but the generated code is slightly
different.
This commit is contained in:
Jilles Tjoelker 2014-09-14 16:27:49 +00:00
parent 20250ee1ab
commit 671a890e58
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=271592
1 changed files with 39 additions and 36 deletions
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75
bin/sh/parser.c
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@ -945,6 +945,42 @@ struct tokenstate
};
/*
* Check to see whether we are at the end of the here document. When this
* is called, c is set to the first character of the next input line. If
* we are at the end of the here document, this routine sets the c to PEOF.
* The new value of c is returned.
*/
static int
checkend(int c, const char *eofmark, char *line, size_t sizeof_line,
int striptabs)
{
if (striptabs) {
while (c == '\t')
c = pgetc();
}
if (c == *eofmark) {
if (pfgets(line, sizeof_line) != NULL) {
const char *p, *q;
p = line;
for (q = eofmark + 1 ; *q && *p == *q ; p++, q++);
if ((*p == '\0' || *p == '\n') && *q == '\0') {
c = PEOF;
if (*p == '\n') {
plinno++;
needprompt = doprompt;
}
} else {
pushstring(line, strlen(line), NULL);
}
}
}
return (c);
}
/*
* Called to parse command substitutions.
*/
@ -1269,7 +1305,6 @@ readcstyleesc(char *out)
* will run code that appears at the end of readtoken1.
*/
#define CHECKEND() {goto checkend; checkend_return:;}
#define PARSEREDIR() {goto parseredir; parseredir_return:;}
#define PARSESUB() {goto parsesub; parsesub_return:;}
#define PARSEARITH() {goto parsearith; parsearith_return:;}
@ -1303,7 +1338,9 @@ readtoken1(int firstc, char const *initialsyntax, const char *eofmark,
STARTSTACKSTR(out);
loop: { /* for each line, until end of word */
CHECKEND(); /* set c to PEOF if at end of here document */
if (eofmark)
/* set c to PEOF if at end of here document */
c = checkend(c, eofmark, line, sizeof(line), striptabs);
for (;;) { /* until end of line or end of word */
CHECKSTRSPACE(4, out); /* permit 4 calls to USTPUTC */
@ -1483,40 +1520,6 @@ readtoken1(int firstc, char const *initialsyntax, const char *eofmark,
/* end of readtoken routine */
/*
* Check to see whether we are at the end of the here document. When this
* is called, c is set to the first character of the next input line. If
* we are at the end of the here document, this routine sets the c to PEOF.
*/
checkend: {
if (eofmark) {
if (striptabs) {
while (c == '\t')
c = pgetc();
}
if (c == *eofmark) {
if (pfgets(line, sizeof line) != NULL) {
const char *p, *q;
p = line;
for (q = eofmark + 1 ; *q && *p == *q ; p++, q++);
if ((*p == '\0' || *p == '\n') && *q == '\0') {
c = PEOF;
if (*p == '\n') {
plinno++;
needprompt = doprompt;
}
} else {
pushstring(line, strlen(line), NULL);
}
}
}
}
goto checkend_return;
}
/*
* Parse a redirection operator. The variable "out" points to a string
* specifying the fd to be redirected. The variable "c" contains the