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Diffstat (limited to 'shell')
-rw-r--r--shell/ash.c315
1 files changed, 149 insertions, 166 deletions
diff --git a/shell/ash.c b/shell/ash.c
index b618a47..f631e3d 100644
--- a/shell/ash.c
+++ b/shell/ash.c
@@ -2433,12 +2433,13 @@ static const char *expandstr(const char *ps);
#endif
static void
-setprompt(int whichprompt)
+setprompt_if(smallint do_set, int whichprompt)
{
const char *prompt;
-#if ENABLE_ASH_EXPAND_PRMT
- struct stackmark smark;
-#endif
+ IF_ASH_EXPAND_PRMT(struct stackmark smark;)
+
+ if (!do_set)
+ return;
needprompt = 0;
@@ -6022,9 +6023,7 @@ argstr(char *p, int flags, struct strlist *var_str_list)
c = p[length];
if (c) {
if (!(c & 0x80)
-#if ENABLE_SH_MATH_SUPPORT
- || c == CTLENDARI
-#endif
+ IF_SH_MATH_SUPPORT(|| c == CTLENDARI)
) {
/* c == '=' || c == ':' || c == CTLENDARI */
length++;
@@ -6107,8 +6106,7 @@ argstr(char *p, int flags, struct strlist *var_str_list)
#endif
}
}
- breakloop:
- ;
+ breakloop: ;
}
static char *
@@ -11054,159 +11052,156 @@ readtoken1(int c, int syntax, char *eofmark, int striptabs)
STARTSTACKSTR(out);
loop:
/* For each line, until end of word */
- {
- CHECKEND(); /* set c to PEOF if at end of here document */
- for (;;) { /* until end of line or end of word */
- CHECKSTRSPACE(4, out); /* permit 4 calls to USTPUTC */
- switch (SIT(c, syntax)) {
- case CNL: /* '\n' */
- if (syntax == BASESYNTAX)
- goto endword; /* exit outer loop */
- USTPUTC(c, out);
- g_parsefile->linno++;
- if (doprompt)
- setprompt(2);
- c = pgetc();
- goto loop; /* continue outer loop */
- case CWORD:
- USTPUTC(c, out);
- break;
- case CCTL:
- if (eofmark == NULL || dblquote)
- USTPUTC(CTLESC, out);
+ CHECKEND(); /* set c to PEOF if at end of here document */
+ for (;;) { /* until end of line or end of word */
+ CHECKSTRSPACE(4, out); /* permit 4 calls to USTPUTC */
+ switch (SIT(c, syntax)) {
+ case CNL: /* '\n' */
+ if (syntax == BASESYNTAX)
+ goto endword; /* exit outer loop */
+ USTPUTC(c, out);
+ g_parsefile->linno++;
+ setprompt_if(doprompt, 2);
+ c = pgetc();
+ goto loop; /* continue outer loop */
+ case CWORD:
+ USTPUTC(c, out);
+ break;
+ case CCTL:
+ if (eofmark == NULL || dblquote)
+ USTPUTC(CTLESC, out);
#if ENABLE_ASH_BASH_COMPAT
- if (c == '\\' && bash_dollar_squote) {
- c = decode_dollar_squote();
- if (c & 0x100) {
- USTPUTC('\\', out);
- c = (unsigned char)c;
- }
+ if (c == '\\' && bash_dollar_squote) {
+ c = decode_dollar_squote();
+ if (c & 0x100) {
+ USTPUTC('\\', out);
+ c = (unsigned char)c;
}
+ }
#endif
- USTPUTC(c, out);
- break;
- case CBACK: /* backslash */
- c = pgetc_without_PEOA();
- if (c == PEOF) {
+ USTPUTC(c, out);
+ break;
+ case CBACK: /* backslash */
+ c = pgetc_without_PEOA();
+ if (c == PEOF) {
+ USTPUTC(CTLESC, out);
+ USTPUTC('\\', out);
+ pungetc();
+ } else if (c == '\n') {
+ setprompt_if(doprompt, 2);
+ } else {
+#if ENABLE_ASH_EXPAND_PRMT
+ if (c == '$' && pssyntax) {
USTPUTC(CTLESC, out);
USTPUTC('\\', out);
- pungetc();
- } else if (c == '\n') {
- if (doprompt)
- setprompt(2);
- } else {
-#if ENABLE_ASH_EXPAND_PRMT
- if (c == '$' && pssyntax) {
- USTPUTC(CTLESC, out);
- USTPUTC('\\', out);
- }
+ }
#endif
- /* Backslash is retained if we are in "str" and next char isn't special */
- if (dblquote
- && c != '\\'
- && c != '`'
- && c != '$'
- && (c != '"' || eofmark != NULL)
- ) {
- USTPUTC(CTLESC, out);
- USTPUTC('\\', out);
- }
- if (SIT(c, SQSYNTAX) == CCTL)
- USTPUTC(CTLESC, out);
- USTPUTC(c, out);
- quotef = 1;
+ /* Backslash is retained if we are in "str" and next char isn't special */
+ if (dblquote
+ && c != '\\'
+ && c != '`'
+ && c != '$'
+ && (c != '"' || eofmark != NULL)
+ ) {
+ USTPUTC(CTLESC, out);
+ USTPUTC('\\', out);
}
- break;
- case CSQUOTE:
- syntax = SQSYNTAX;
+ if (SIT(c, SQSYNTAX) == CCTL)
+ USTPUTC(CTLESC, out);
+ USTPUTC(c, out);
+ quotef = 1;
+ }
+ break;
+ case CSQUOTE:
+ syntax = SQSYNTAX;
quotemark:
- if (eofmark == NULL) {
- USTPUTC(CTLQUOTEMARK, out);
+ if (eofmark == NULL) {
+ USTPUTC(CTLQUOTEMARK, out);
+ }
+ break;
+ case CDQUOTE:
+ syntax = DQSYNTAX;
+ dblquote = 1;
+ goto quotemark;
+ case CENDQUOTE:
+ IF_ASH_BASH_COMPAT(bash_dollar_squote = 0;)
+ if (eofmark != NULL && arinest == 0
+ && varnest == 0
+ ) {
+ USTPUTC(c, out);
+ } else {
+ if (dqvarnest == 0) {
+ syntax = BASESYNTAX;
+ dblquote = 0;
}
- break;
- case CDQUOTE:
- syntax = DQSYNTAX;
- dblquote = 1;
+ quotef = 1;
goto quotemark;
- case CENDQUOTE:
- IF_ASH_BASH_COMPAT(bash_dollar_squote = 0;)
- if (eofmark != NULL && arinest == 0
- && varnest == 0
- ) {
- USTPUTC(c, out);
- } else {
- if (dqvarnest == 0) {
- syntax = BASESYNTAX;
- dblquote = 0;
- }
- quotef = 1;
- goto quotemark;
- }
- break;
- case CVAR: /* '$' */
- PARSESUB(); /* parse substitution */
- break;
- case CENDVAR: /* '}' */
- if (varnest > 0) {
- varnest--;
- if (dqvarnest > 0) {
- dqvarnest--;
- }
- c = CTLENDVAR;
+ }
+ break;
+ case CVAR: /* '$' */
+ PARSESUB(); /* parse substitution */
+ break;
+ case CENDVAR: /* '}' */
+ if (varnest > 0) {
+ varnest--;
+ if (dqvarnest > 0) {
+ dqvarnest--;
}
- USTPUTC(c, out);
- break;
+ c = CTLENDVAR;
+ }
+ USTPUTC(c, out);
+ break;
#if ENABLE_SH_MATH_SUPPORT
- case CLP: /* '(' in arithmetic */
- parenlevel++;
- USTPUTC(c, out);
- break;
- case CRP: /* ')' in arithmetic */
- if (parenlevel > 0) {
- parenlevel--;
- } else {
- if (pgetc() == ')') {
- if (--arinest == 0) {
- syntax = prevsyntax;
- dblquote = (syntax == DQSYNTAX);
- c = CTLENDARI;
- }
- } else {
- /*
- * unbalanced parens
- * (don't 2nd guess - no error)
- */
- pungetc();
+ case CLP: /* '(' in arithmetic */
+ parenlevel++;
+ USTPUTC(c, out);
+ break;
+ case CRP: /* ')' in arithmetic */
+ if (parenlevel > 0) {
+ parenlevel--;
+ } else {
+ if (pgetc() == ')') {
+ if (--arinest == 0) {
+ syntax = prevsyntax;
+ dblquote = (syntax == DQSYNTAX);
+ c = CTLENDARI;
}
+ } else {
+ /*
+ * unbalanced parens
+ * (don't 2nd guess - no error)
+ */
+ pungetc();
}
- USTPUTC(c, out);
- break;
+ }
+ USTPUTC(c, out);
+ break;
#endif
- case CBQUOTE: /* '`' */
- PARSEBACKQOLD();
- break;
- case CENDFILE:
- goto endword; /* exit outer loop */
- case CIGN:
- break;
- default:
- if (varnest == 0) {
+ case CBQUOTE: /* '`' */
+ PARSEBACKQOLD();
+ break;
+ case CENDFILE:
+ goto endword; /* exit outer loop */
+ case CIGN:
+ break;
+ default:
+ if (varnest == 0) {
#if ENABLE_ASH_BASH_COMPAT
- if (c == '&') {
- if (pgetc() == '>')
- c = 0x100 + '>'; /* flag &> */
- pungetc();
- }
-#endif
- goto endword; /* exit outer loop */
+ if (c == '&') {
+ if (pgetc() == '>')
+ c = 0x100 + '>'; /* flag &> */
+ pungetc();
}
- IF_ASH_ALIAS(if (c != PEOA))
- USTPUTC(c, out);
+#endif
+ goto endword; /* exit outer loop */
}
- c = pgetc_fast();
- } /* for (;;) */
- }
+ IF_ASH_ALIAS(if (c != PEOA))
+ USTPUTC(c, out);
+ }
+ c = pgetc_fast();
+ } /* for (;;) */
endword:
+
#if ENABLE_SH_MATH_SUPPORT
if (syntax == ARISYNTAX)
raise_error_syntax("missing '))'");
@@ -11542,16 +11537,14 @@ parsebackq: {
treatment to some slashes, and then push the string and
reread it as input, interpreting it normally. */
char *pout;
- int pc;
size_t psavelen;
char *pstr;
-
STARTSTACKSTR(pout);
for (;;) {
- if (needprompt) {
- setprompt(2);
- }
+ int pc;
+
+ setprompt_if(needprompt, 2);
pc = pgetc();
switch (pc) {
case '`':
@@ -11561,8 +11554,7 @@ parsebackq: {
pc = pgetc();
if (pc == '\n') {
g_parsefile->linno++;
- if (doprompt)
- setprompt(2);
+ setprompt_if(doprompt, 2);
/*
* If eating a newline, avoid putting
* the newline into the new character
@@ -11725,9 +11717,7 @@ xxreadtoken(void)
tokpushback = 0;
return lasttoken;
}
- if (needprompt) {
- setprompt(2);
- }
+ setprompt_if(needprompt, 2);
startlinno = g_parsefile->linno;
for (;;) { /* until token or start of word found */
c = pgetc_fast();
@@ -11744,8 +11734,7 @@ xxreadtoken(void)
break; /* return readtoken1(...) */
}
startlinno = ++g_parsefile->linno;
- if (doprompt)
- setprompt(2);
+ setprompt_if(doprompt, 2);
} else {
const char *p;
@@ -11791,9 +11780,7 @@ xxreadtoken(void)
tokpushback = 0;
return lasttoken;
}
- if (needprompt) {
- setprompt(2);
- }
+ setprompt_if(needprompt, 2);
startlinno = g_parsefile->linno;
for (;;) { /* until token or start of word found */
c = pgetc_fast();
@@ -11809,8 +11796,7 @@ xxreadtoken(void)
case '\\':
if (pgetc() == '\n') {
startlinno = ++g_parsefile->linno;
- if (doprompt)
- setprompt(2);
+ setprompt_if(doprompt, 2);
continue;
}
pungetc();
@@ -11936,8 +11922,7 @@ parsecmd(int interact)
tokpushback = 0;
doprompt = interact;
- if (doprompt)
- setprompt(doprompt);
+ setprompt_if(doprompt, doprompt);
needprompt = 0;
t = readtoken();
if (t == TEOF)
@@ -11961,10 +11946,8 @@ parseheredoc(void)
heredoclist = NULL;
while (here) {
- if (needprompt) {
- setprompt(2);
- }
- readtoken1(pgetc(), here->here->type == NHERE? SQSYNTAX : DQSYNTAX,
+ setprompt_if(needprompt, 2);
+ readtoken1(pgetc(), here->here->type == NHERE ? SQSYNTAX : DQSYNTAX,
here->eofmark, here->striptabs);
n = stzalloc(sizeof(struct narg));
n->narg.type = NARG;
generated by cgit v1.1 at 2024-12-26 04:18:47 +0000