diff options
Diffstat (limited to '')
| -rw-r--r-- | src/input.c | 27 | ||||
| -rw-r--r-- | src/input.h | 1 | ||||
| -rw-r--r-- | src/parser.c | 88 | ||||
| -rw-r--r-- | src/parser.h | 1 |
4 files changed, 40 insertions, 77 deletions
diff --git a/src/input.c b/src/input.c index 11f7a3f..bc84e57 100644 --- a/src/input.c +++ b/src/input.c @@ -125,33 +125,6 @@ RESET { /* - * Read a line from the script. - */ - -char * -pfgets(char *line, int len) -{ - char *p = line; - int nleft = len; - int c; - - while (--nleft > 0) { - c = pgetc2(); - if (c == PEOF) { - if (p == line) - return NULL; - break; - } - *p++ = c; - if (c == '\n') - break; - } - *p = '\0'; - return line; -} - - -/* * Read a character from the script, returning PEOF on end of file. * Nul characters in the input are silently discarded. */ diff --git a/src/input.h b/src/input.h index 1ed9ddf..1d6f528 100644 --- a/src/input.h +++ b/src/input.h @@ -50,7 +50,6 @@ extern int plinno; extern int parsenleft; /* number of characters left in input buffer */ extern char *parsenextc; /* next character in input buffer */ -char *pfgets(char *, int); int pgetc(void); int pgetc2(void); int preadbuffer(void); diff --git a/src/parser.c b/src/parser.c index 3832f0b..2d20b00 100644 --- a/src/parser.c +++ b/src/parser.c @@ -59,8 +59,6 @@ * Shell command parser. */ -#define EOFMARKLEN 79 - /* values returned by readtoken */ #include "token.h" @@ -101,7 +99,6 @@ STATIC int peektoken(void); STATIC int readtoken(void); STATIC int xxreadtoken(void); STATIC int readtoken1(int, char const *, char *, int); -STATIC int noexpand(char *); STATIC void synexpect(int) __attribute__((__noreturn__)); STATIC void synerror(const char *) __attribute__((__noreturn__)); STATIC void setprompt(int); @@ -596,18 +593,17 @@ parsefname(void) { union node *n = redirnode; + if (n->type == NHERE) + checkkwd = CHKEOFMARK; if (readtoken() != TWORD) synexpect(-1); if (n->type == NHERE) { struct heredoc *here = heredoc; struct heredoc *p; - int i; if (quoteflag == 0) n->type = NXHERE; TRACE(("Here document %d\n", n->type)); - if (! noexpand(wordtext) || (i = strlen(wordtext)) == 0 || i > EOFMARKLEN) - synerror("Illegal eof marker for << redirection"); rmescapes(wordtext); here->eofmark = wordtext; here->next = NULL; @@ -836,7 +832,6 @@ readtoken1(int firstc, char const *syntax, char *eofmark, int striptabs) int c = firstc; char *out; int len; - char line[EOFMARKLEN + 1]; struct nodelist *bqlist; int quotef; int dblquote; @@ -1036,6 +1031,9 @@ endword: checkend: { if (eofmark) { + int markloc; + char *p; + if (c == PEOA) { c = pgetc2(); } @@ -1044,28 +1042,42 @@ checkend: { c = pgetc2(); } } - if (c == *eofmark) { - if (pfgets(line, sizeof line) != NULL) { - char *p, *q; - int cc; - - p = line; - for (q = eofmark + 1;; p++, q++) { - cc = *p; - if (cc == '\n') - cc = 0; - if (!*q || cc != *q) - break; - } - if (cc == *q) { - c = PEOF; - plinno++; - needprompt = doprompt; - } else { - pushstring(line, NULL); + + markloc = out - (char *)stackblock(); + for (p = eofmark; STPUTC(c, out), *p; p++) { + if (c != *p) + goto more_heredoc; + + c = pgetc2(); + } + + if (c == '\n' || c == PEOF) { + c = PEOF; + plinno++; + needprompt = doprompt; + } else { + int len; + +more_heredoc: + p = (char *)stackblock() + markloc + 1; + len = out - p; + + if (len) { + len -= c < 0; + c = p[-1]; + + if (len) { + char *str; + + str = alloca(len + 1); + *(char *)mempcpy(str, p, len) = 0; + + pushstring(str, NULL); } } } + + STADJUST((char *)stackblock() + markloc - out, out); } goto checkend_return; } @@ -1148,6 +1160,7 @@ parsesub: { c = pgetc(); if ( + (checkkwd & CHKEOFMARK) || c <= PEOA || (c != '(' && c != '{' && !is_name(c) && !is_special(c)) ) { @@ -1400,29 +1413,6 @@ RESET { } #endif -/* - * Returns true if the text contains nothing to expand (no dollar signs - * or backquotes). - */ - -STATIC int -noexpand(char *text) -{ - char *p; - signed char c; - - p = text; - while ((c = *p++) != '\0') { - if (c == CTLQUOTEMARK) - continue; - if (c == CTLESC) - p++; - else if (BASESYNTAX[(int)c] == CCTL) - return 0; - } - return 1; -} - /* * Return of a legal variable name (a letter or underscore followed by zero or diff --git a/src/parser.h b/src/parser.h index badbd07..6bdf1c9 100644 --- a/src/parser.h +++ b/src/parser.h @@ -65,6 +65,7 @@ #define CHKALIAS 0x1 #define CHKKWD 0x2 #define CHKNL 0x4 +#define CHKEOFMARK 0x8 /* |