diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/expand.c | 42 | ||||
| -rw-r--r-- | src/expand.h | 1 |
2 files changed, 18 insertions, 25 deletions
diff --git a/src/expand.c b/src/expand.c index eb50e15..c565646 100644 --- a/src/expand.c +++ b/src/expand.c @@ -86,8 +86,6 @@ /* Add CTLESC when necessary. */ #define QUOTES_ESC (EXP_FULL | EXP_CASE) -/* Do not skip NUL characters. */ -#define QUOTES_KEEPNUL EXP_TILDE /* * Structure specifying which parts of the string should be searched @@ -117,8 +115,8 @@ STATIC char *exptilde(char *, char *, int); STATIC void expbackq(union node *, int); STATIC const char *subevalvar(char *, char *, int, int, int, int, int); STATIC char *evalvar(char *, int); -STATIC size_t strtodest(const char *, const char *, int); -STATIC void memtodest(const char *, size_t, const char *, int); +static size_t strtodest(const char *p, int flags); +static void memtodest(const char *p, size_t len, int flags); STATIC ssize_t varvalue(char *, int, int, int); STATIC void expandmeta(struct strlist *, int); #ifdef HAVE_GLOB @@ -359,7 +357,6 @@ exptilde(char *startp, char *p, int flag) signed char c; char *name; const char *home; - int quotes = flag & QUOTES_ESC; name = p + 1; @@ -388,7 +385,7 @@ done: if (!home) goto lose; *p = c; - strtodest(home, SQSYNTAX, quotes); + strtodest(home, flag | EXP_QUOTED); return (p); lose: *p = c; @@ -513,7 +510,6 @@ expbackq(union node *cmd, int flag) char *p; char *dest; int startloc; - char const *syntax = flag & EXP_QUOTED ? DQSYNTAX : BASESYNTAX; struct stackmark smark; INTOFF; @@ -527,7 +523,7 @@ expbackq(union node *cmd, int flag) if (i == 0) goto read; for (;;) { - memtodest(p, i, syntax, flag & QUOTES_ESC); + memtodest(p, i, flag); read: if (in.fd < 0) break; @@ -835,8 +831,9 @@ end: * Put a string on the stack. */ -STATIC void -memtodest(const char *p, size_t len, const char *syntax, int quotes) { +static void memtodest(const char *p, size_t len, int flags) +{ + const char *syntax = flags & EXP_QUOTED ? DQSYNTAX : BASESYNTAX; char *q; if (unlikely(!len)) @@ -847,11 +844,11 @@ memtodest(const char *p, size_t len, const char *syntax, int quotes) { do { int c = (signed char)*p++; if (c) { - if ((quotes & QUOTES_ESC) && + if ((flags & QUOTES_ESC) && ((syntax[c] == CCTL) || - (syntax != BASESYNTAX && syntax[c] == CBACK))) + (flags & EXP_QUOTED && syntax[c] == CBACK))) USTPUTC(CTLESC, q); - } else if (!(quotes & QUOTES_KEEPNUL)) + } else if (!(flags & EXP_KEEPNUL)) continue; USTPUTC(c, q); } while (--len); @@ -860,14 +857,10 @@ memtodest(const char *p, size_t len, const char *syntax, int quotes) { } -STATIC size_t -strtodest(p, syntax, quotes) - const char *p; - const char *syntax; - int quotes; +static size_t strtodest(const char *p, int flags) { size_t len = strlen(p); - memtodest(p, len, syntax, quotes); + memtodest(p, len, flags); return len; } @@ -886,15 +879,14 @@ varvalue(char *name, int varflags, int flags, int quoted) int sep; char sepc; char **ap; - char const *syntax; int subtype = varflags & VSTYPE; int discard = subtype == VSPLUS || subtype == VSLENGTH; - int quotes = (discard ? 0 : (flags & QUOTES_ESC)) | QUOTES_KEEPNUL; ssize_t len = 0; char c; + flags |= EXP_KEEPNUL; + flags &= discard ? ~QUOTES_ESC : ~0; sep = (flags & EXP_FULL) << CHAR_BIT; - syntax = quoted ? DQSYNTAX : BASESYNTAX; switch (*name) { case '$': @@ -950,11 +942,11 @@ param: if (!(ap = shellparam.p)) return -1; while ((p = *ap++)) { - len += strtodest(p, syntax, quotes); + len += strtodest(p, flags); if (*ap && sep) { len++; - memtodest(&sepc, 1, syntax, quotes); + memtodest(&sepc, 1, flags); } } break; @@ -979,7 +971,7 @@ value: if (!p) return -1; - len = strtodest(p, syntax, quotes); + len = strtodest(p, flags); break; } diff --git a/src/expand.h b/src/expand.h index 90f5328..617b851 100644 --- a/src/expand.h +++ b/src/expand.h @@ -58,6 +58,7 @@ struct arglist { #define EXP_VARTILDE2 0x40 /* expand tildes after colons only */ #define EXP_WORD 0x80 /* expand word in parameter expansion */ #define EXP_QUOTED 0x100 /* expand word in double quotes */ +#define EXP_KEEPNUL 0x200 /* do not skip NUL characters */ union node; |