summaryrefslogtreecommitdiff
path: root/editors/awk.c
diff options
context:
space:
mode:
Diffstat (limited to 'editors/awk.c')
-rw-r--r--editors/awk.c587
1 files changed, 293 insertions, 294 deletions
diff --git a/editors/awk.c b/editors/awk.c
index 5a500aa..97e7816 100644
--- a/editors/awk.c
+++ b/editors/awk.c
@@ -77,10 +77,10 @@ typedef struct hash_item_s {
} hash_item;
typedef struct xhash_s {
- unsigned int nel; /* num of elements */
- unsigned int csize; /* current hash size */
- unsigned int nprime; /* next hash size in PRIMES[] */
- unsigned int glen; /* summary length of item names */
+ unsigned nel; /* num of elements */
+ unsigned csize; /* current hash size */
+ unsigned nprime; /* next hash size in PRIMES[] */
+ unsigned glen; /* summary length of item names */
struct hash_item_s **items;
} xhash;
@@ -260,88 +260,87 @@ enum {
#define OC_B OC_BUILTIN
-static char * const tokenlist =
- "\1(" NTC
- "\1)" NTC
- "\1/" NTC /* REGEXP */
- "\2>>" "\1>" "\1|" NTC /* OUTRDR */
- "\2++" "\2--" NTC /* UOPPOST */
- "\2++" "\2--" "\1$" NTC /* UOPPRE1 */
- "\2==" "\1=" "\2+=" "\2-=" /* BINOPX */
- "\2*=" "\2/=" "\2%=" "\2^="
- "\1+" "\1-" "\3**=" "\2**"
- "\1/" "\1%" "\1^" "\1*"
- "\2!=" "\2>=" "\2<=" "\1>"
- "\1<" "\2!~" "\1~" "\2&&"
- "\2||" "\1?" "\1:" NTC
- "\2in" NTC
- "\1," NTC
- "\1|" NTC
- "\1+" "\1-" "\1!" NTC /* UOPPRE2 */
- "\1]" NTC
- "\1{" NTC
- "\1}" NTC
- "\1;" NTC
- "\1\n" NTC
- "\2if" "\2do" "\3for" "\5break" /* STATX */
- "\10continue" "\6delete" "\5print"
- "\6printf" "\4next" "\10nextfile"
- "\6return" "\4exit" NTC
- "\5while" NTC
- "\4else" NTC
-
- "\3and" "\5compl" "\6lshift" "\2or"
- "\6rshift" "\3xor"
- "\5close" "\6system" "\6fflush" "\5atan2" /* BUILTIN */
- "\3cos" "\3exp" "\3int" "\3log"
- "\4rand" "\3sin" "\4sqrt" "\5srand"
- "\6gensub" "\4gsub" "\5index" "\6length"
- "\5match" "\5split" "\7sprintf" "\3sub"
- "\6substr" "\7systime" "\10strftime"
- "\7tolower" "\7toupper" NTC
- "\7getline" NTC
- "\4func" "\10function" NTC
- "\5BEGIN" NTC
- "\3END" "\0"
+static const char tokenlist[] =
+ "\1(" NTC
+ "\1)" NTC
+ "\1/" NTC /* REGEXP */
+ "\2>>" "\1>" "\1|" NTC /* OUTRDR */
+ "\2++" "\2--" NTC /* UOPPOST */
+ "\2++" "\2--" "\1$" NTC /* UOPPRE1 */
+ "\2==" "\1=" "\2+=" "\2-=" /* BINOPX */
+ "\2*=" "\2/=" "\2%=" "\2^="
+ "\1+" "\1-" "\3**=" "\2**"
+ "\1/" "\1%" "\1^" "\1*"
+ "\2!=" "\2>=" "\2<=" "\1>"
+ "\1<" "\2!~" "\1~" "\2&&"
+ "\2||" "\1?" "\1:" NTC
+ "\2in" NTC
+ "\1," NTC
+ "\1|" NTC
+ "\1+" "\1-" "\1!" NTC /* UOPPRE2 */
+ "\1]" NTC
+ "\1{" NTC
+ "\1}" NTC
+ "\1;" NTC
+ "\1\n" NTC
+ "\2if" "\2do" "\3for" "\5break" /* STATX */
+ "\10continue" "\6delete" "\5print"
+ "\6printf" "\4next" "\10nextfile"
+ "\6return" "\4exit" NTC
+ "\5while" NTC
+ "\4else" NTC
+
+ "\3and" "\5compl" "\6lshift" "\2or"
+ "\6rshift" "\3xor"
+ "\5close" "\6system" "\6fflush" "\5atan2" /* BUILTIN */
+ "\3cos" "\3exp" "\3int" "\3log"
+ "\4rand" "\3sin" "\4sqrt" "\5srand"
+ "\6gensub" "\4gsub" "\5index" "\6length"
+ "\5match" "\5split" "\7sprintf" "\3sub"
+ "\6substr" "\7systime" "\10strftime"
+ "\7tolower" "\7toupper" NTC
+ "\7getline" NTC
+ "\4func" "\10function" NTC
+ "\5BEGIN" NTC
+ "\3END" "\0"
;
static const uint32_t tokeninfo[] = {
-
0,
0,
OC_REGEXP,
- xS|'a', xS|'w', xS|'|',
- OC_UNARY|xV|P(9)|'p', OC_UNARY|xV|P(9)|'m',
- OC_UNARY|xV|P(9)|'P', OC_UNARY|xV|P(9)|'M',
- OC_FIELD|xV|P(5),
- OC_COMPARE|VV|P(39)|5, OC_MOVE|VV|P(74),
- OC_REPLACE|NV|P(74)|'+', OC_REPLACE|NV|P(74)|'-',
- OC_REPLACE|NV|P(74)|'*', OC_REPLACE|NV|P(74)|'/',
- OC_REPLACE|NV|P(74)|'%', OC_REPLACE|NV|P(74)|'&',
- OC_BINARY|NV|P(29)|'+', OC_BINARY|NV|P(29)|'-',
- OC_REPLACE|NV|P(74)|'&', OC_BINARY|NV|P(15)|'&',
- OC_BINARY|NV|P(25)|'/', OC_BINARY|NV|P(25)|'%',
- OC_BINARY|NV|P(15)|'&', OC_BINARY|NV|P(25)|'*',
- OC_COMPARE|VV|P(39)|4, OC_COMPARE|VV|P(39)|3,
- OC_COMPARE|VV|P(39)|0, OC_COMPARE|VV|P(39)|1,
- OC_COMPARE|VV|P(39)|2, OC_MATCH|Sx|P(45)|'!',
- OC_MATCH|Sx|P(45)|'~', OC_LAND|Vx|P(55),
- OC_LOR|Vx|P(59), OC_TERNARY|Vx|P(64)|'?',
- OC_COLON|xx|P(67)|':',
+ xS|'a', xS|'w', xS|'|',
+ OC_UNARY|xV|P(9)|'p', OC_UNARY|xV|P(9)|'m',
+ OC_UNARY|xV|P(9)|'P', OC_UNARY|xV|P(9)|'M',
+ OC_FIELD|xV|P(5),
+ OC_COMPARE|VV|P(39)|5, OC_MOVE|VV|P(74),
+ OC_REPLACE|NV|P(74)|'+', OC_REPLACE|NV|P(74)|'-',
+ OC_REPLACE|NV|P(74)|'*', OC_REPLACE|NV|P(74)|'/',
+ OC_REPLACE|NV|P(74)|'%', OC_REPLACE|NV|P(74)|'&',
+ OC_BINARY|NV|P(29)|'+', OC_BINARY|NV|P(29)|'-',
+ OC_REPLACE|NV|P(74)|'&', OC_BINARY|NV|P(15)|'&',
+ OC_BINARY|NV|P(25)|'/', OC_BINARY|NV|P(25)|'%',
+ OC_BINARY|NV|P(15)|'&', OC_BINARY|NV|P(25)|'*',
+ OC_COMPARE|VV|P(39)|4, OC_COMPARE|VV|P(39)|3,
+ OC_COMPARE|VV|P(39)|0, OC_COMPARE|VV|P(39)|1,
+ OC_COMPARE|VV|P(39)|2, OC_MATCH|Sx|P(45)|'!',
+ OC_MATCH|Sx|P(45)|'~', OC_LAND|Vx|P(55),
+ OC_LOR|Vx|P(59), OC_TERNARY|Vx|P(64)|'?',
+ OC_COLON|xx|P(67)|':',
OC_IN|SV|P(49),
OC_COMMA|SS|P(80),
OC_PGETLINE|SV|P(37),
- OC_UNARY|xV|P(19)|'+', OC_UNARY|xV|P(19)|'-',
- OC_UNARY|xV|P(19)|'!',
+ OC_UNARY|xV|P(19)|'+', OC_UNARY|xV|P(19)|'-',
+ OC_UNARY|xV|P(19)|'!',
0,
0,
0,
0,
0,
- ST_IF, ST_DO, ST_FOR, OC_BREAK,
- OC_CONTINUE, OC_DELETE|Vx, OC_PRINT,
- OC_PRINTF, OC_NEXT, OC_NEXTFILE,
- OC_RETURN|Vx, OC_EXIT|Nx,
+ ST_IF, ST_DO, ST_FOR, OC_BREAK,
+ OC_CONTINUE, OC_DELETE|Vx, OC_PRINT,
+ OC_PRINTF, OC_NEXT, OC_NEXTFILE,
+ OC_RETURN|Vx, OC_EXIT|Nx,
ST_WHILE,
0,
@@ -363,32 +362,32 @@ static const uint32_t tokeninfo[] = {
/* internal variable names and their initial values */
/* asterisk marks SPECIAL vars; $ is just no-named Field0 */
enum {
- CONVFMT=0, OFMT, FS, OFS,
- ORS, RS, RT, FILENAME,
- SUBSEP, ARGIND, ARGC, ARGV,
- ERRNO, FNR,
- NR, NF, IGNORECASE,
- ENVIRON, F0, _intvarcount_
+ CONVFMT=0, OFMT, FS, OFS,
+ ORS, RS, RT, FILENAME,
+ SUBSEP, ARGIND, ARGC, ARGV,
+ ERRNO, FNR,
+ NR, NF, IGNORECASE,
+ ENVIRON, F0, _intvarcount_
};
-static char * vNames =
- "CONVFMT\0" "OFMT\0" "FS\0*" "OFS\0"
- "ORS\0" "RS\0*" "RT\0" "FILENAME\0"
- "SUBSEP\0" "ARGIND\0" "ARGC\0" "ARGV\0"
- "ERRNO\0" "FNR\0"
- "NR\0" "NF\0*" "IGNORECASE\0*"
- "ENVIRON\0" "$\0*" "\0";
-
-static char * vValues =
- "%.6g\0" "%.6g\0" " \0" " \0"
- "\n\0" "\n\0" "\0" "\0"
+static const char vNames[] =
+ "CONVFMT\0" "OFMT\0" "FS\0*" "OFS\0"
+ "ORS\0" "RS\0*" "RT\0" "FILENAME\0"
+ "SUBSEP\0" "ARGIND\0" "ARGC\0" "ARGV\0"
+ "ERRNO\0" "FNR\0"
+ "NR\0" "NF\0*" "IGNORECASE\0*"
+ "ENVIRON\0" "$\0*" "\0";
+
+static const char vValues[] =
+ "%.6g\0" "%.6g\0" " \0" " \0"
+ "\n\0" "\n\0" "\0" "\0"
"\034\0"
"\377";
/* hash size may grow to these values */
#define FIRST_PRIME 61;
-static const unsigned int PRIMES[] = { 251, 1021, 4093, 16381, 65521 };
-enum { NPRIMES = sizeof(PRIMES) / sizeof(unsigned int) };
+static const unsigned PRIMES[] = { 251, 1021, 4093, 16381, 65521 };
+enum { NPRIMES = sizeof(PRIMES) / sizeof(unsigned) };
/* globals */
@@ -441,10 +440,15 @@ static const char EMSG_TOO_FEW_ARGS[] = "Too few arguments for builtin";
static const char EMSG_NOT_ARRAY[] = "Not an array";
static const char EMSG_POSSIBLE_ERROR[] = "Possible syntax error";
static const char EMSG_UNDEF_FUNC[] = "Call to undefined function";
-#ifndef CONFIG_FEATURE_AWK_MATH
+#if !ENABLE_FEATURE_AWK_MATH
static const char EMSG_NO_MATH[] = "Math support is not compiled in";
#endif
+static void zero_out_var(var * vp)
+{
+ memset(vp, 0, sizeof(*vp));
+}
+
static void syntax_error(const char * const message) ATTRIBUTE_NORETURN;
static void syntax_error(const char * const message)
{
@@ -456,11 +460,11 @@ static void syntax_error(const char * const message)
/* ---- hash stuff ---- */
-static unsigned int hashidx(const char *name)
+static unsigned hashidx(const char *name)
{
- unsigned int idx=0;
+ unsigned idx = 0;
- while (*name) idx = *name++ + (idx << 6) - idx;
+ while (*name) idx = *name++ + (idx << 6) - idx;
return idx;
}
@@ -493,7 +497,7 @@ static void *hash_search(xhash *hash, const char *name)
/* grow hash if it becomes too big */
static void hash_rebuild(xhash *hash)
{
- unsigned int newsize, i, idx;
+ unsigned newsize, i, idx;
hash_item **newitems, *hi, *thi;
if (hash->nprime == NPRIMES)
@@ -522,7 +526,7 @@ static void hash_rebuild(xhash *hash)
static void *hash_find(xhash *hash, const char *name)
{
hash_item *hi;
- unsigned int idx;
+ unsigned idx;
int l;
hi = hash_search(hash, name);
@@ -542,10 +546,10 @@ static void *hash_find(xhash *hash, const char *name)
return &(hi->data);
}
-#define findvar(hash, name) (var *) hash_find ( (hash) , (name) )
-#define newvar(name) (var *) hash_find ( vhash , (name) )
-#define newfile(name) (rstream *) hash_find ( fdhash , (name) )
-#define newfunc(name) (func *) hash_find ( fnhash , (name) )
+#define findvar(hash, name) ((var*) hash_find((hash) , (name)))
+#define newvar(name) ((var*) hash_find(vhash , (name)))
+#define newfile(name) ((rstream*)hash_find(fdhash ,(name)))
+#define newfunc(name) ((func*) hash_find(fnhash , (name)))
static void hash_remove(xhash *hash, const char *name)
{
@@ -582,7 +586,7 @@ static char *nextword(char **s)
{
char *p = *s;
- while (*(*s)++) ;
+ while (*(*s)++) /* */;
return p;
}
@@ -626,7 +630,7 @@ static xhash *iamarray(var *v)
static void clear_array(xhash *array)
{
- unsigned int i;
+ unsigned i;
hash_item *hi, *thi;
for (i=0; i<array->csize; i++) {
@@ -833,14 +837,15 @@ static void nvfree(var *v)
*/
static uint32_t next_token(uint32_t expected)
{
+ static int concat_inserted;
+ static uint32_t save_tclass, save_info;
+ static uint32_t ltclass = TC_OPTERM;
+
char *p, *pp, *s;
- char *tl;
+ const char *tl;
uint32_t tc;
const uint32_t *ti;
int l;
- static int concat_inserted;
- static uint32_t save_tclass, save_info;
- static uint32_t ltclass = TC_OPTERM;
if (t.rollback) {
@@ -930,7 +935,7 @@ static uint32_t next_token(uint32_t expected)
tl += l;
}
- if (! *tl) {
+ if (!*tl) {
/* it's a name (var/array/function),
* otherwise it's something wrong
*/
@@ -1072,8 +1077,8 @@ static node *parse_expr(uint32_t iexp)
/* one should be very careful with switch on tclass -
* only simple tclasses should be used! */
switch (tc) {
- case TC_VARIABLE:
- case TC_ARRAY:
+ case TC_VARIABLE:
+ case TC_ARRAY:
cn->info = OC_VAR;
if ((v = hash_search(ahash, t.string)) != NULL) {
cn->info = OC_FNARG;
@@ -1087,8 +1092,8 @@ static node *parse_expr(uint32_t iexp)
}
break;
- case TC_NUMBER:
- case TC_STRING:
+ case TC_NUMBER:
+ case TC_STRING:
cn->info = OC_VAR;
v = cn->l.v = xzalloc(sizeof(var));
if (tc & TC_NUMBER)
@@ -1097,27 +1102,27 @@ static node *parse_expr(uint32_t iexp)
setvar_s(v, t.string);
break;
- case TC_REGEXP:
+ case TC_REGEXP:
mk_re_node(t.string, cn, xzalloc(sizeof(regex_t)*2));
break;
- case TC_FUNCTION:
+ case TC_FUNCTION:
cn->info = OC_FUNC;
cn->r.f = newfunc(t.string);
cn->l.n = condition();
break;
- case TC_SEQSTART:
+ case TC_SEQSTART:
cn = vn->r.n = parse_expr(TC_SEQTERM);
cn->a.n = vn;
break;
- case TC_GETLINE:
+ case TC_GETLINE:
glptr = cn;
xtc = TC_OPERAND | TC_UOPPRE | TC_BINOP | iexp;
break;
- case TC_BUILTIN:
+ case TC_BUILTIN:
cn->l.n = condition();
break;
}
@@ -1403,8 +1408,8 @@ static void fsrealloc(int size)
if (size >= maxfields) {
i = maxfields;
maxfields = size + 16;
- Fields = (var *)xrealloc(Fields, maxfields * sizeof(var));
- for (; i<maxfields; i++) {
+ Fields = xrealloc(Fields, maxfields * sizeof(var));
+ for (; i < maxfields; i++) {
Fields[i].type = VF_SPECIAL;
Fields[i].string = NULL;
}
@@ -1420,7 +1425,7 @@ static void fsrealloc(int size)
static int awk_split(char *s, node *spl, char **slist)
{
- int l, n=0;
+ int l, n = 0;
char c[4];
char *s1;
regmatch_t pmatch[2];
@@ -1441,11 +1446,11 @@ static int awk_split(char *s, node *spl, char **slist)
if (pmatch[0].rm_eo == 0) { l++; pmatch[0].rm_eo++; }
} else {
pmatch[0].rm_eo = l;
- if (*(s+l)) pmatch[0].rm_eo++;
+ if (s[l]) pmatch[0].rm_eo++;
}
memcpy(s1, s, l);
- *(s1+l) = '\0';
+ s1[l] = '\0';
nextword(&s1);
s += pmatch[0].rm_eo;
n++;
@@ -1494,7 +1499,7 @@ static void split_f0(void)
n = awk_split(getvar_s(V[F0]), &fsplitter.n, &fstrings);
fsrealloc(n);
s = fstrings;
- for (i=0; i<n; i++) {
+ for (i = 0; i < n; i++) {
Fields[i].string = nextword(&s);
Fields[i].type |= (VF_FSTR | VF_USER | VF_DIRTY);
}
@@ -1610,7 +1615,8 @@ static int hashwalk_next(var *v)
/* evaluate node, return 1 when result is true, 0 otherwise */
static int ptest(node *pattern)
{
- static var v;
+ static var v; /* static: to save stack space? */
+
return istrue(evaluate(pattern, &v));
}
@@ -1710,14 +1716,14 @@ static int awk_getline(rstream *rsm, var *v)
static int fmt_num(char *b, int size, const char *format, double n, int int_as_int)
{
- int r=0;
+ int r = 0;
char c;
- const char *s=format;
+ const char *s = format;
if (int_as_int && n == (int)n) {
r = snprintf(b, size, "%d", (int)n);
} else {
- do { c = *s; } while (*s && *++s);
+ do { c = *s; } while (c && *++s);
if (strchr("diouxX", c)) {
r = snprintf(b, size, format, (int)n);
} else if (strchr("eEfgG", c)) {
@@ -1751,15 +1757,17 @@ static char *awk_printf(node *n)
f++;
incr = (f - s) + MAXVARFMT;
- qrealloc(&b, incr+i, &bsize);
- c = *f; if (c != '\0') f++;
- c1 = *f ; *f = '\0';
+ qrealloc(&b, incr + i, &bsize);
+ c = *f;
+ if (c != '\0') f++;
+ c1 = *f;
+ *f = '\0';
arg = evaluate(nextarg(&n), v);
j = i;
if (c == 'c' || !c) {
- i += sprintf(b+i, s,
- is_numeric(arg) ? (char)getvar_i(arg) : *getvar_s(arg));
+ i += sprintf(b+i, s, is_numeric(arg) ?
+ (char)getvar_i(arg) : *getvar_s(arg));
} else if (c == 's') {
s1 = getvar_s(arg);
@@ -1776,7 +1784,7 @@ static char *awk_printf(node *n)
}
- b = xrealloc(b, i+1);
+ b = xrealloc(b, i + 1);
free(fmt);
nvfree(v);
b[i] = '\0';
@@ -1890,15 +1898,15 @@ static var *exec_builtin(node *op, var *res)
switch (info & OPNMASK) {
- case B_a2:
-#ifdef CONFIG_FEATURE_AWK_MATH
+ case B_a2:
+#if ENABLE_FEATURE_AWK_MATH
setvar_i(res, atan2(getvar_i(av[i]), getvar_i(av[1])));
#else
runtime_error(EMSG_NO_MATH);
#endif
break;
- case B_sp:
+ case B_sp:
if (nargs > 2) {
spl = (an[2]->info & OPCLSMASK) == OC_REGEXP ?
an[2] : mk_splitter(getvar_s(evaluate(an[2], &tv[2])), &tspl);
@@ -1915,7 +1923,7 @@ static var *exec_builtin(node *op, var *res)
setvar_i(res, n);
break;
- case B_ss:
+ case B_ss:
l = strlen(as[0]);
i = getvar_i(av[1]) - 1;
if (i>l) i=l; if (i<0) i=0;
@@ -1927,35 +1935,35 @@ static var *exec_builtin(node *op, var *res)
setvar_p(res, s);
break;
- case B_an:
+ case B_an:
setvar_i(res, (long)getvar_i(av[0]) & (long)getvar_i(av[1]));
break;
- case B_co:
+ case B_co:
setvar_i(res, ~(long)getvar_i(av[0]));
break;
- case B_ls:
+ case B_ls:
setvar_i(res, (long)getvar_i(av[0]) << (long)getvar_i(av[1]));
break;
- case B_or:
+ case B_or:
setvar_i(res, (long)getvar_i(av[0]) | (long)getvar_i(av[1]));
break;
- case B_rs:
+ case B_rs:
setvar_i(res, (long)((unsigned long)getvar_i(av[0]) >> (unsigned long)getvar_i(av[1])));
break;
- case B_xo:
+ case B_xo:
setvar_i(res, (long)getvar_i(av[0]) ^ (long)getvar_i(av[1]));
break;
- case B_lo:
+ case B_lo:
to_xxx = tolower;
goto lo_cont;
- case B_up:
+ case B_up:
to_xxx = toupper;
lo_cont:
s1 = s = xstrdup(as[0]);
@@ -1966,7 +1974,7 @@ lo_cont:
setvar_p(res, s);
break;
- case B_ix:
+ case B_ix:
n = 0;
ll = strlen(as[1]);
l = strlen(as[0]) - ll;
@@ -1989,7 +1997,7 @@ lo_cont:
setvar_i(res, n);
break;
- case B_ti:
+ case B_ti:
if (nargs > 1)
tt = getvar_i(av[1]);
else
@@ -2000,7 +2008,7 @@ lo_cont:
setvar_s(res, buf);
break;
- case B_ma:
+ case B_ma:
re = as_regex(an[1], &sreg);
n = regexec(re, as[0], 1, pmatch, 0);
if (n == 0) {
@@ -2016,15 +2024,15 @@ lo_cont:
if (re == &sreg) regfree(re);
break;
- case B_ge:
+ case B_ge:
awk_sub(an[0], as[1], getvar_i(av[2]), av[3], res, TRUE);
break;
- case B_gs:
+ case B_gs:
setvar_i(res, awk_sub(an[0], as[1], 0, av[2], av[2], FALSE));
break;
- case B_su:
+ case B_su:
setvar_i(res, awk_sub(an[0], as[1], 1, av[2], av[2], FALSE));
break;
}
@@ -2043,7 +2051,7 @@ static var *evaluate(node *op, var *res)
{
/* This procedure is recursive so we should count every byte */
static var *fnargs = NULL;
- static unsigned int seed = 1;
+ static unsigned seed = 1;
static regex_t sreg;
node *op1;
var *v1;
@@ -2088,7 +2096,7 @@ static var *evaluate(node *op, var *res)
/* -- iterative node type -- */
/* test pattern */
- case XC( OC_TEST ):
+ case XC( OC_TEST ):
if ((op1->info & OPCLSMASK) == OC_COMMA) {
/* it's range pattern */
if ((opinfo & OF_CHECKED) || ptest(op1->l.n)) {
@@ -2106,26 +2114,26 @@ static var *evaluate(node *op, var *res)
break;
/* just evaluate an expression, also used as unconditional jump */
- case XC( OC_EXEC ):
+ case XC( OC_EXEC ):
break;
/* branch, used in if-else and various loops */
- case XC( OC_BR ):
+ case XC( OC_BR ):
op = istrue(L.v) ? op->a.n : op->r.n;
break;
/* initialize for-in loop */
- case XC( OC_WALKINIT ):
+ case XC( OC_WALKINIT ):
hashwalk_init(L.v, iamarray(R.v));
break;
/* get next array item */
- case XC( OC_WALKNEXT ):
+ case XC( OC_WALKNEXT ):
op = hashwalk_next(L.v) ? op->a.n : op->r.n;
break;
- case XC( OC_PRINT ):
- case XC( OC_PRINTF ):
+ case XC( OC_PRINT ):
+ case XC( OC_PRINTF ):
X.F = stdout;
if (op->r.n) {
X.rsm = newfile(R.s);
@@ -2168,7 +2176,7 @@ static var *evaluate(node *op, var *res)
fflush(X.F);
break;
- case XC( OC_DELETE ):
+ case XC( OC_DELETE ):
X.info = op1->info & OPCLSMASK;
if (X.info == OC_VAR) {
R.v = op1->l.v;
@@ -2187,50 +2195,50 @@ static var *evaluate(node *op, var *res)
}
break;
- case XC( OC_NEWSOURCE ):
+ case XC( OC_NEWSOURCE ):
programname = op->l.s;
break;
- case XC( OC_RETURN ):
+ case XC( OC_RETURN ):
copyvar(res, L.v);
break;
- case XC( OC_NEXTFILE ):
+ case XC( OC_NEXTFILE ):
nextfile = TRUE;
- case XC( OC_NEXT ):
+ case XC( OC_NEXT ):
nextrec = TRUE;
- case XC( OC_DONE ):
+ case XC( OC_DONE ):
clrvar(res);
break;
- case XC( OC_EXIT ):
+ case XC( OC_EXIT ):
awk_exit(L.d);
/* -- recursive node type -- */
- case XC( OC_VAR ):
+ case XC( OC_VAR ):
L.v = op->l.v;
if (L.v == V[NF])
split_f0();
goto v_cont;
- case XC( OC_FNARG ):
+ case XC( OC_FNARG ):
L.v = &fnargs[op->l.i];
v_cont:
res = (op->r.n) ? findvar(iamarray(L.v), R.s) : L.v;
break;
- case XC( OC_IN ):
+ case XC( OC_IN ):
setvar_i(res, hash_search(iamarray(R.v), L.s) ? 1 : 0);
break;
- case XC( OC_REGEXP ):
+ case XC( OC_REGEXP ):
op1 = op;
L.s = getvar_s(V[F0]);
goto re_cont;
- case XC( OC_MATCH ):
+ case XC( OC_MATCH ):
op1 = op->r.n;
re_cont:
X.re = as_regex(op1, &sreg);
@@ -2239,7 +2247,7 @@ re_cont:
setvar_i(res, (R.i == 0 ? 1 : 0) ^ (opn == '!' ? 1 : 0));
break;
- case XC( OC_MOVE ):
+ case XC( OC_MOVE ):
/* if source is a temporary string, jusk relink it to dest */
if (R.v == v1+1 && R.v->string) {
res = setvar_p(L.v, R.v->string);
@@ -2249,13 +2257,13 @@ re_cont:
}
break;
- case XC( OC_TERNARY ):
+ case XC( OC_TERNARY ):
if ((op->r.n->info & OPCLSMASK) != OC_COLON)
runtime_error(EMSG_POSSIBLE_ERROR);
res = evaluate(istrue(L.v) ? op->r.n->l.n : op->r.n->r.n, res);
break;
- case XC( OC_FUNC ):
+ case XC( OC_FUNC ):
if (! op->r.f->body.first)
runtime_error(EMSG_UNDEF_FUNC);
@@ -2280,8 +2288,8 @@ re_cont:
fnargs = R.v;
break;
- case XC( OC_GETLINE ):
- case XC( OC_PGETLINE ):
+ case XC( OC_GETLINE ):
+ case XC( OC_PGETLINE ):
if (op1) {
X.rsm = newfile(L.s);
if (! X.rsm->F) {
@@ -2317,70 +2325,70 @@ re_cont:
break;
/* simple builtins */
- case XC( OC_FBLTIN ):
+ case XC( OC_FBLTIN ):
switch (opn) {
- case F_in:
+ case F_in:
R.d = (int)L.d;
break;
- case F_rn:
- R.d = (double)rand() / (double)RAND_MAX;
+ case F_rn:
+ R.d = (double)rand() / (double)RAND_MAX;
break;
-#ifdef CONFIG_FEATURE_AWK_MATH
- case F_co:
+#if ENABLE_FEATURE_AWK_MATH
+ case F_co:
R.d = cos(L.d);
break;
- case F_ex:
+ case F_ex:
R.d = exp(L.d);
break;
- case F_lg:
+ case F_lg:
R.d = log(L.d);
break;
- case F_si:
+ case F_si:
R.d = sin(L.d);
break;
- case F_sq:
+ case F_sq:
R.d = sqrt(L.d);
break;
#else
- case F_co:
- case F_ex:
- case F_lg:
- case F_si:
- case F_sq:
+ case F_co:
+ case F_ex:
+ case F_lg:
+ case F_si:
+ case F_sq:
runtime_error(EMSG_NO_MATH);
break;
#endif
- case F_sr:
+ case F_sr:
R.d = (double)seed;
- seed = op1 ? (unsigned int)L.d : (unsigned int)time(NULL);
+ seed = op1 ? (unsigned)L.d : (unsigned)time(NULL);
srand(seed);
break;
- case F_ti:
+ case F_ti:
R.d = time(NULL);
break;
- case F_le:
+ case F_le:
if (! op1)
L.s = getvar_s(V[F0]);
R.d = strlen(L.s);
break;
- case F_sy:
+ case F_sy:
fflush(NULL);
R.d = (ENABLE_FEATURE_ALLOW_EXEC && L.s && *L.s)
? (system(L.s) >> 8) : 0;
break;
- case F_ff:
+ case F_ff:
if (! op1)
fflush(stdout);
else {
@@ -2393,7 +2401,7 @@ re_cont:
}
break;
- case F_cl:
+ case F_cl:
X.rsm = (rstream *)hash_search(fdhash, L.s);
if (X.rsm) {
R.i = X.rsm->is_pipe ? pclose(X.rsm->F) : fclose(X.rsm->F);
@@ -2408,43 +2416,43 @@ re_cont:
setvar_i(res, R.d);
break;
- case XC( OC_BUILTIN ):
+ case XC( OC_BUILTIN ):
res = exec_builtin(op, res);
break;
- case XC( OC_SPRINTF ):
+ case XC( OC_SPRINTF ):
setvar_p(res, awk_printf(op1));
break;
- case XC( OC_UNARY ):
+ case XC( OC_UNARY ):
X.v = R.v;
L.d = R.d = getvar_i(R.v);
switch (opn) {
- case 'P':
+ case 'P':
L.d = ++R.d;
goto r_op_change;
- case 'p':
+ case 'p':
R.d++;
goto r_op_change;
- case 'M':
+ case 'M':
L.d = --R.d;
goto r_op_change;
- case 'm':
+ case 'm':
R.d--;
goto r_op_change;
- case '!':
+ case '!':
L.d = istrue(X.v) ? 0 : 1;
break;
- case '-':
+ case '-':
L.d = -R.d;
break;
- r_op_change:
+ r_op_change:
setvar_i(X.v, R.d);
}
setvar_i(res, L.d);
break;
- case XC( OC_FIELD ):
+ case XC( OC_FIELD ):
R.i = (int)getvar_i(R.v);
if (R.i == 0) {
res = V[F0];
@@ -2458,53 +2466,53 @@ re_cont:
break;
/* concatenation (" ") and index joining (",") */
- case XC( OC_CONCAT ):
- case XC( OC_COMMA ):
+ case XC( OC_CONCAT ):
+ case XC( OC_COMMA ):
opn = strlen(L.s) + strlen(R.s) + 2;
X.s = xmalloc(opn);
strcpy(X.s, L.s);
if ((opinfo & OPCLSMASK) == OC_COMMA) {
L.s = getvar_s(V[SUBSEP]);
- X.s = (char *)xrealloc(X.s, opn + strlen(L.s));
+ X.s = xrealloc(X.s, opn + strlen(L.s));
strcat(X.s, L.s);
}
strcat(X.s, R.s);
setvar_p(res, X.s);
break;
- case XC( OC_LAND ):
+ case XC( OC_LAND ):
setvar_i(res, istrue(L.v) ? ptest(op->r.n) : 0);
break;
- case XC( OC_LOR ):
+ case XC( OC_LOR ):
setvar_i(res, istrue(L.v) ? 1 : ptest(op->r.n));
break;
- case XC( OC_BINARY ):
- case XC( OC_REPLACE ):
+ case XC( OC_BINARY ):
+ case XC( OC_REPLACE ):
R.d = getvar_i(R.v);
switch (opn) {
- case '+':
+ case '+':
L.d += R.d;
break;
- case '-':
+ case '-':
L.d -= R.d;
break;
- case '*':
+ case '*':
L.d *= R.d;
break;
- case '/':
+ case '/':
if (R.d == 0) runtime_error(EMSG_DIV_BY_ZERO);
L.d /= R.d;
break;
- case '&':
-#ifdef CONFIG_FEATURE_AWK_MATH
+ case '&':
+#if ENABLE_FEATURE_AWK_MATH
L.d = pow(L.d, R.d);
#else
runtime_error(EMSG_NO_MATH);
#endif
break;
- case '%':
+ case '%':
if (R.d == 0) runtime_error(EMSG_DIV_BY_ZERO);
L.d -= (int)(L.d / R.d) * R.d;
break;
@@ -2512,7 +2520,7 @@ re_cont:
res = setvar_i(((opinfo&OPCLSMASK) == OC_BINARY) ? res : X.v, L.d);
break;
- case XC( OC_COMPARE ):
+ case XC( OC_COMPARE ):
if (is_numeric(L.v) && is_numeric(R.v)) {
L.d = getvar_i(L.v) - getvar_i(R.v);
} else {
@@ -2521,20 +2529,20 @@ re_cont:
L.d = icase ? strcasecmp(L.s, R.s) : strcmp(L.s, R.s);
}
switch (opn & 0xfe) {
- case 0:
+ case 0:
R.i = (L.d > 0);
break;
- case 2:
+ case 2:
R.i = (L.d >= 0);
break;
- case 4:
+ case 4:
R.i = (L.d == 0);
break;
}
setvar_i(res, (opn & 0x1 ? R.i : !R.i) ? 1 : 0);
break;
- default:
+ default:
runtime_error(EMSG_POSSIBLE_ERROR);
}
if ((opinfo & OPCLSMASK) <= SHIFT_TIL_THIS)
@@ -2553,18 +2561,20 @@ re_cont:
static int awk_exit(int r)
{
- unsigned int i;
+ var tv;
+ unsigned i;
hash_item *hi;
- static var tv;
- if (! exiting) {
+ zero_out_var(&tv);
+
+ if (!exiting) {
exiting = TRUE;
nextrec = FALSE;
evaluate(endseq.first, &tv);
}
/* waiting for children */
- for (i=0; i<fdhash->csize; i++) {
+ for (i = 0; i < fdhash->csize; i++) {
hi = fdhash->items[i];
while (hi) {
if (hi->data.rs.F && hi->data.rs.is_pipe)
@@ -2635,18 +2645,17 @@ int awk_main(int argc, char **argv)
{
unsigned opt;
char *opt_F, *opt_v, *opt_W;
- char *s, *s1;
- int i, j, c, flen;
+ int i, j, flen;
var *v;
- static var tv;
+ var tv;
char **envp;
- static int from_file = FALSE;
- rstream *rsm;
- FILE *F, *stdfiles[3];
- static char * stdnames = "/dev/stdin\0/dev/stdout\0/dev/stderr";
+ char *vnames = (char *)vNames; /* cheat */
+ char *vvalues = (char *)vValues;
+
+ zero_out_var(&tv);
/* allocate global buffer */
- buf = xmalloc(MAXVARFMT+1);
+ buf = xmalloc(MAXVARFMT + 1);
vhash = hash_init();
ahash = hash_init();
@@ -2654,98 +2663,90 @@ int awk_main(int argc, char **argv)
fnhash = hash_init();
/* initialize variables */
- for (i=0; *vNames; i++) {
- V[i] = v = newvar(nextword(&vNames));
- if (*vValues != '\377')
- setvar_s(v, nextword(&vValues));
+ for (i = 0; *vnames; i++) {
+ V[i] = v = newvar(nextword(&vnames));
+ if (*vvalues != '\377')
+ setvar_s(v, nextword(&vvalues));
else
setvar_i(v, 0);
- if (*vNames == '*') {
+ if (*vnames == '*') {
v->type |= VF_SPECIAL;
- vNames++;
+ vnames++;
}
}
handle_special(V[FS]);
handle_special(V[RS]);
- stdfiles[0] = stdin;
- stdfiles[1] = stdout;
- stdfiles[2] = stderr;
- for (i=0; i<3; i++) {
- rsm = newfile(nextword(&stdnames));
- rsm->F = stdfiles[i];
- }
+ newfile("/dev/stdin")->F = stdin;
+ newfile("/dev/stdout")->F = stdout;
+ newfile("/dev/stderr")->F = stderr;
- for (envp=environ; *envp; envp++) {
- s = xstrdup(*envp);
- s1 = strchr(s, '=');
- if (!s1) {
- goto keep_going;
+ for (envp = environ; *envp; envp++) {
+ char *s = xstrdup(*envp);
+ char *s1 = strchr(s, '=');
+ if (s1) {
+ *s1++ = '\0';
+ setvar_u(findvar(iamarray(V[ENVIRON]), s), s1);
}
- *(s1++) = '\0';
- setvar_u(findvar(iamarray(V[ENVIRON]), s), s1);
-keep_going:
free(s);
}
opt = getopt32(argc, argv, "F:v:f:W:", &opt_F, &opt_v, &programname, &opt_W);
+ argv += optind;
+ argc -= optind;
if (opt & 0x1) setvar_s(V[FS], opt_F); // -F
if (opt & 0x2) if (!is_assignment(opt_v)) bb_show_usage(); // -v
if (opt & 0x4) { // -f
- from_file = TRUE;
- F = afopen(programname, "r");
- s = NULL;
+ char *s = s; /* die, gcc, die */
+ FILE *from_file = afopen(programname, "r");
/* one byte is reserved for some trick in next_token */
- if (fseek(F, 0, SEEK_END) == 0) {
- flen = ftell(F);
- s = xmalloc(flen+4);
- fseek(F, 0, SEEK_SET);
- i = 1 + fread(s+1, 1, flen, F);
+ if (fseek(from_file, 0, SEEK_END) == 0) {
+ flen = ftell(from_file);
+ s = xmalloc(flen + 4);
+ fseek(from_file, 0, SEEK_SET);
+ i = 1 + fread(s + 1, 1, flen, from_file);
} else {
- for (i=j=1; j>0; i+=j) {
- s = (char *)xrealloc(s, i+4096);
- j = fread(s+i, 1, 4094, F);
+ for (i = j = 1; j > 0; i += j) {
+ s = xrealloc(s, i + 4096);
+ j = fread(s + i, 1, 4094, from_file);
}
}
s[i] = '\0';
- fclose(F);
- parse_program(s+1);
+ fclose(from_file);
+ parse_program(s + 1);
free(s);
- }
- if (opt & 0x8) // -W
- bb_error_msg("warning: unrecognized option '-W %s' ignored", opt_W);
-
- if (!from_file) {
- if (argc == optind)
+ } else { // no -f: take program from 1st parameter
+ if (!argc)
bb_show_usage();
programname = "cmd. line";
- parse_program(argv[optind++]);
-
+ parse_program(*argv++);
+ argc--;
}
+ if (opt & 0x8) // -W
+ bb_error_msg("warning: unrecognized option '-W %s' ignored", opt_W);
/* fill in ARGV array */
- setvar_i(V[ARGC], argc - optind + 1);
+ setvar_i(V[ARGC], argc + 1);
setari_u(V[ARGV], 0, "awk");
- for (i = optind; i < argc; i++)
- setari_u(V[ARGV], i+1-optind, argv[i]);
+ i = 0;
+ while (*argv)
+ setari_u(V[ARGV], ++i, *argv++);
evaluate(beginseq.first, &tv);
- if (! mainseq.first && ! endseq.first)
+ if (!mainseq.first && !endseq.first)
awk_exit(EXIT_SUCCESS);
/* input file could already be opened in BEGIN block */
- if (! iF) iF = next_input_file();
+ if (!iF) iF = next_input_file();
/* passing through input files */
while (iF) {
-
nextfile = FALSE;
setvar_i(V[FNR], 0);
- while ((c = awk_getline(iF, V[F0])) > 0) {
-
+ while ((i = awk_getline(iF, V[F0])) > 0) {
nextrec = FALSE;
incvar(V[NR]);
incvar(V[FNR]);
@@ -2755,14 +2756,12 @@ keep_going:
break;
}
- if (c < 0)
+ if (i < 0)
runtime_error(strerror(errno));
iF = next_input_file();
-
}
awk_exit(EXIT_SUCCESS);
-
- return 0;
+ /*return 0;*/
}
generated by cgit v1.1 at 2024-12-26 07:13:46 +0000