* Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
*/
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <errno.h>
-#include <string.h>
-#include <strings.h>
-#include <time.h>
-#include <math.h>
-#include <ctype.h>
-#include <getopt.h>
-
-#include "xregex.h"
#include "busybox.h"
+#include "xregex.h"
+#include <math.h>
-#define MAXVARFMT 240
-#define MINNVBLOCK 64
+#define MAXVARFMT 240
+#define MINNVBLOCK 64
/* variable flags */
-#define VF_NUMBER 0x0001 /* 1 = primary type is number */
-#define VF_ARRAY 0x0002 /* 1 = it's an array */
+#define VF_NUMBER 0x0001 /* 1 = primary type is number */
+#define VF_ARRAY 0x0002 /* 1 = it's an array */
-#define VF_CACHED 0x0100 /* 1 = num/str value has cached str/num eq */
-#define VF_USER 0x0200 /* 1 = user input (may be numeric string) */
-#define VF_SPECIAL 0x0400 /* 1 = requires extra handling when changed */
-#define VF_WALK 0x0800 /* 1 = variable has alloc'd x.walker list */
-#define VF_FSTR 0x1000 /* 1 = string points to fstring buffer */
-#define VF_CHILD 0x2000 /* 1 = function arg; x.parent points to source */
-#define VF_DIRTY 0x4000 /* 1 = variable was set explicitly */
+#define VF_CACHED 0x0100 /* 1 = num/str value has cached str/num eq */
+#define VF_USER 0x0200 /* 1 = user input (may be numeric string) */
+#define VF_SPECIAL 0x0400 /* 1 = requires extra handling when changed */
+#define VF_WALK 0x0800 /* 1 = variable has alloc'd x.walker list */
+#define VF_FSTR 0x1000 /* 1 = var::string points to fstring buffer */
+#define VF_CHILD 0x2000 /* 1 = function arg; x.parent points to source */
+#define VF_DIRTY 0x4000 /* 1 = variable was set explicitly */
/* these flags are static, don't change them when value is changed */
-#define VF_DONTTOUCH (VF_ARRAY | VF_SPECIAL | VF_WALK | VF_CHILD | VF_DIRTY)
+#define VF_DONTTOUCH (VF_ARRAY | VF_SPECIAL | VF_WALK | VF_CHILD | VF_DIRTY)
/* Variable */
typedef struct var_s {
- unsigned short type; /* flags */
+ unsigned short type; /* flags */
double number;
char *string;
union {
- int aidx; /* func arg idx (for compilation stage) */
- struct xhash_s *array; /* array ptr */
- struct var_s *parent; /* for func args, ptr to actual parameter */
- char **walker; /* list of array elements (for..in) */
+ int aidx; /* func arg idx (for compilation stage) */
+ struct xhash_s *array; /* array ptr */
+ struct var_s *parent; /* for func args, ptr to actual parameter */
+ char **walker; /* list of array elements (for..in) */
} x;
} var;
typedef struct chain_s {
struct node_s *first;
struct node_s *last;
- char *programname;
+ const char *programname;
} chain;
/* Function */
} 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;
/* builtins */
enum {
B_a2=0, B_ix, B_ma, B_sp, B_ss, B_ti, B_lo, B_up,
- B_ge, B_gs, B_su
+ B_ge, B_gs, B_su,
+ B_an, B_co, B_ls, B_or, B_rs, B_xo,
};
/* tokens and their corresponding info values */
#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$" NTC /* UOPPRE1 */
- "\2==" "\1=" "\2+=" "\2-=" /* BINOPX */
- "\2*=" "\2/=" "\2%=" "\2^="
- "\1+" "\1-" "\3**=" "\2**"
- "\1/" "\1%" "\1^" "\1*"
- "\2!=" "\2>=" "\2<=" "\1>"
- "\1<" "\2!~" "\1~" "\2&&"
- "\2||" "\1?" "\1:" NTC
- "\2in" NTC
- "\1," NTC
- "\1|" NTC
- "\1+" "\1-" "\1!" NTC /* UOPPRE2 */
- "\1]" NTC
- "\1{" NTC
- "\1}" NTC
- "\1;" NTC
- "\1\n" NTC
- "\2if" "\2do" "\3for" "\5break" /* STATX */
- "\10continue" "\6delete" "\5print"
- "\6printf" "\4next" "\10nextfile"
- "\6return" "\4exit" NTC
- "\5while" NTC
- "\4else" NTC
-
- "\5close" "\6system" "\6fflush" "\5atan2" /* BUILTIN */
- "\3cos" "\3exp" "\3int" "\3log"
- "\4rand" "\3sin" "\4sqrt" "\5srand"
- "\6gensub" "\4gsub" "\5index" "\6length"
- "\5match" "\5split" "\7sprintf" "\3sub"
- "\6substr" "\7systime" "\10strftime"
- "\7tolower" "\7toupper" NTC
- "\7getline" NTC
- "\4func" "\10function" NTC
- "\5BEGIN" NTC
- "\3END" "\0"
+static const char tokenlist[] =
+ "\1(" NTC
+ "\1)" NTC
+ "\1/" NTC /* REGEXP */
+ "\2>>" "\1>" "\1|" NTC /* OUTRDR */
+ "\2++" "\2--" NTC /* UOPPOST */
+ "\2++" "\2--" "\1$" 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,
+ OC_B|B_an|P(0x83), OC_B|B_co|P(0x41), OC_B|B_ls|P(0x83), OC_B|B_or|P(0x83),
+ OC_B|B_rs|P(0x83), OC_B|B_xo|P(0x83),
OC_FBLTIN|Sx|F_cl, OC_FBLTIN|Sx|F_sy, OC_FBLTIN|Sx|F_ff, OC_B|B_a2|P(0x83),
OC_FBLTIN|Nx|F_co, OC_FBLTIN|Nx|F_ex, OC_FBLTIN|Nx|F_in, OC_FBLTIN|Nx|F_lg,
OC_FBLTIN|F_rn, OC_FBLTIN|Nx|F_si, OC_FBLTIN|Nx|F_sq, OC_FBLTIN|Nx|F_sr,
/* 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 */
static node *break_ptr, *continue_ptr;
static rstream *iF;
static xhash *vhash, *ahash, *fdhash, *fnhash;
-static char *programname;
+static const char *programname;
static short lineno;
static int is_f0_split;
static int nfields;
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)
{
/* ---- hash stuff ---- */
-static unsigned int hashidx(const char *name)
+static unsigned hashidx(const char *name)
{
- register unsigned int idx=0;
+ unsigned idx = 0;
- while (*name) idx = *name++ + (idx << 6) - idx;
+ while (*name) idx = *name++ + (idx << 6) - idx;
return idx;
}
{
xhash *newhash;
- newhash = (xhash *)xzalloc(sizeof(xhash));
+ newhash = xzalloc(sizeof(xhash));
newhash->csize = FIRST_PRIME;
- newhash->items = (hash_item **)xzalloc(newhash->csize * sizeof(hash_item *));
+ newhash->items = xzalloc(newhash->csize * sizeof(hash_item *));
return newhash;
}
/* 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)
return;
newsize = PRIMES[hash->nprime++];
- newitems = (hash_item **)xzalloc(newsize * sizeof(hash_item *));
+ newitems = xzalloc(newsize * sizeof(hash_item *));
for (i=0; i<hash->csize; i++) {
hi = hash->items[i];
static void *hash_find(xhash *hash, const char *name)
{
hash_item *hi;
- unsigned int idx;
+ unsigned idx;
int l;
hi = hash_search(hash, 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)
{
static void skip_spaces(char **s)
{
- register char *p = *s;
+ char *p = *s;
- while(*p == ' ' || *p == '\t' ||
+ while (*p == ' ' || *p == '\t' ||
(*p == '\\' && *(p+1) == '\n' && (++p, ++t.lineno))) {
p++;
}
static char *nextword(char **s)
{
- register char *p = *s;
+ char *p = *s;
- while (*(*s)++) ;
+ while (*(*s)++) /* */;
return p;
}
static char nextchar(char **s)
{
- register char c, *pps;
+ char c, *pps;
c = *((*s)++);
pps = *s;
return c;
}
-static inline int isalnum_(int c)
+static int ATTRIBUTE_ALWAYS_INLINE isalnum_(int c)
{
return (isalnum(c) || c == '_');
}
static FILE *afopen(const char *path, const char *mode)
{
- return (*path == '-' && *(path+1) == '\0') ? stdin : bb_xfopen(path, mode);
+ return (*path == '-' && *(path+1) == '\0') ? stdin : xfopen(path, mode);
}
/* -------- working with variables (set/get/copy/etc) -------- */
static void clear_array(xhash *array)
{
- unsigned int i;
+ unsigned i;
hash_item *hi, *thi;
for (i=0; i<array->csize; i++) {
/* same as setvar_p but make a copy of string */
static var *setvar_s(var *v, const char *value)
{
- return setvar_p(v, (value && *value) ? bb_xstrdup(value) : NULL);
+ return setvar_p(v, (value && *value) ? xstrdup(value) : NULL);
}
/* same as setvar_s but set USER flag */
/* set array element to user string */
static void setari_u(var *a, int idx, const char *s)
{
- register var *v;
+ var *v;
static char sidx[12];
sprintf(sidx, "%d", idx);
return v;
}
-static char *getvar_s(var *v)
+static const char *getvar_s(var *v)
{
/* if v is numeric and has no cached string, convert it to string */
if ((v->type & (VF_NUMBER | VF_CACHED)) == VF_NUMBER) {
fmt_num(buf, MAXVARFMT, getvar_s(V[CONVFMT]), v->number, TRUE);
- v->string = bb_xstrdup(buf);
+ v->string = xstrdup(buf);
v->type |= VF_CACHED;
}
return (v->string == NULL) ? "" : v->string;
{
if (dest != src) {
clrvar(dest);
- dest->type |= (src->type & ~VF_DONTTOUCH);
+ dest->type |= (src->type & ~(VF_DONTTOUCH | VF_FSTR));
dest->number = src->number;
if (src->string)
- dest->string = bb_xstrdup(src->string);
+ dest->string = xstrdup(src->string);
}
handle_special(dest);
return dest;
if (! cb) {
size = (n <= MINNVBLOCK) ? MINNVBLOCK : n;
- cb = (nvblock *)xmalloc(sizeof(nvblock) + size * sizeof(var));
+ cb = xmalloc(sizeof(nvblock) + size * sizeof(var));
cb->size = size;
cb->pos = cb->nv;
cb->prev = pb;
*/
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) {
-
t.rollback = FALSE;
} else if (concat_inserted) {
-
concat_inserted = FALSE;
t.tclass = save_tclass;
t.info = save_info;
} else {
-
p = pos;
-
- readnext:
+ readnext:
skip_spaces(&p);
lineno = t.lineno;
if (*p == '#')
tl += l;
}
- if (! *tl) {
+ if (!*tl) {
/* it's a name (var/array/function),
* otherwise it's something wrong
*/
- if (! isalnum_(*p))
+ if (!isalnum_(*p))
syntax_error(EMSG_UNEXP_TOKEN);
t.string = --p;
- while(isalnum_(*(++p))) {
+ while (isalnum_(*(++p))) {
*(p-1) = *p;
}
*(p-1) = '\0';
tc = TC_VARIABLE;
/* also consume whitespace between functionname and bracket */
- if (! (expected & TC_VARIABLE)) skip_spaces(&p);
+ if (!(expected & TC_VARIABLE)) skip_spaces(&p);
if (*p == '(') {
tc = TC_FUNCTION;
} else {
static node *new_node(uint32_t info)
{
- register node *n;
+ node *n;
- n = (node *)xzalloc(sizeof(node));
+ n = xzalloc(sizeof(node));
n->info = info;
n->lineno = lineno;
return n;
}
-static node *mk_re_node(char *s, node *n, regex_t *re)
+static node *mk_re_node(const char *s, node *n, regex_t *re)
{
n->info = OC_REGEXP;
n->l.re = re;
/* 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;
}
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)
setvar_s(v, t.string);
break;
- case TC_REGEXP:
- mk_re_node(t.string, cn,
- (regex_t *)xzalloc(sizeof(regex_t)*2));
+ 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;
}
/* add node to chain. Return ptr to alloc'd node */
static node *chain_node(uint32_t info)
{
- register node *n;
+ node *n;
if (! seq->first)
seq->first = seq->last = new_node(0);
if (seq->programname != programname) {
seq->programname = programname;
n = chain_node(OC_NEWSOURCE);
- n->l.s = bb_xstrdup(programname);
+ n->l.s = xstrdup(programname);
}
n = seq->last;
} while (c & TC_NEWLINE);
if (c & TC_GRPSTART) {
- while(next_token(TC_GRPSEQ | TC_GRPTERM) != TC_GRPTERM) {
+ while (next_token(TC_GRPSEQ | TC_GRPTERM) != TC_GRPTERM) {
if (t.tclass & TC_NEWLINE) continue;
rollback_token();
chain_group();
case ST_FOR:
next_token(TC_SEQSTART);
n2 = parse_expr(TC_SEMICOL | TC_SEQTERM);
- if (t.tclass & TC_SEQTERM) { /* for-in */
+ if (t.tclass & TC_SEQTERM) { /* for-in */
if ((n2->info & OPCLSMASK) != OC_IN)
syntax_error(EMSG_UNEXP_TOKEN);
n = chain_node(OC_WALKINIT | VV);
n = chain_loop(NULL);
n->info = OC_WALKNEXT | Vx;
n->l.n = n2->l.n;
- } else { /* for(;;) */
+ } else { /* for (;;) */
n = chain_node(OC_EXEC | Vx);
n->l.n = n2;
n2 = parse_expr(TC_SEMICOL);
/* delete, next, nextfile, return, exit */
default:
chain_expr(t.info);
-
}
}
}
pos = p;
t.lineno = 1;
- while((tclass = next_token(TC_EOF | TC_OPSEQ | TC_GRPSTART |
+ while ((tclass = next_token(TC_EOF | TC_OPSEQ | TC_GRPSTART |
TC_OPTERM | TC_BEGIN | TC_END | TC_FUNCDECL)) != TC_EOF) {
if (tclass & TC_OPTERM)
f = newfunc(t.string);
f->body.first = NULL;
f->nargs = 0;
- while(next_token(TC_VARIABLE | TC_SEQTERM) & TC_VARIABLE) {
+ while (next_token(TC_VARIABLE | TC_SEQTERM) & TC_VARIABLE) {
v = findvar(ahash, t.string);
v->x.aidx = (f->nargs)++;
/* -------- program execution part -------- */
-static node *mk_splitter(char *s, tsplitter *spl)
+static node *mk_splitter(const char *s, tsplitter *spl)
{
- register regex_t *re, *ire;
+ regex_t *re, *ire;
node *n;
re = &spl->re[0];
ire = &spl->re[1];
n = &spl->n;
- if ((n->info && OPCLSMASK) == OC_REGEXP) {
+ if ((n->info & OPCLSMASK) == OC_REGEXP) {
regfree(re);
regfree(ire);
}
static regex_t *as_regex(node *op, regex_t *preg)
{
var *v;
- char *s;
+ const char *s;
if ((op->info & OPCLSMASK) == OC_REGEXP) {
return icase ? op->r.ire : op->l.re;
/* gradually increasing buffer */
static void qrealloc(char **b, int n, int *size)
{
- if (! *b || n >= *size)
+ if (!*b || n >= *size)
*b = xrealloc(*b, *size = n + (n>>1) + 80);
}
/* resize field storage space */
static void fsrealloc(int size)
{
- static int maxfields = 0;
+ static int maxfields; /* = 0;*/
int i;
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;
}
}
if (size < nfields) {
- for (i=size; i<nfields; i++) {
- clrvar(Fields+i);
+ for (i = size; i < nfields; i++) {
+ clrvar(Fields + i);
}
}
nfields = size;
}
-static int awk_split(char *s, node *spl, char **slist)
+static int awk_split(const char *s, node *spl, char **slist)
{
- int l, n=0;
+ int l, n = 0;
char c[4];
char *s1;
regmatch_t pmatch[2];
/* in worst case, each char would be a separate field */
- *slist = s1 = bb_xstrndup(s, strlen(s) * 2 + 3);
+ *slist = s1 = xzalloc(strlen(s) * 2 + 3);
+ strcpy(s1, s);
c[0] = c[1] = (char)spl->info;
c[2] = c[3] = '\0';
if ((spl->info & OPCLSMASK) == OC_REGEXP) { /* regex split */
while (*s) {
l = strcspn(s, c+2);
- if (regexec(icase ? spl->r.ire : spl->l.re, s, 1, pmatch, 0) == 0 &&
- pmatch[0].rm_so <= l) {
+ if (regexec(icase ? spl->r.ire : spl->l.re, s, 1, pmatch, 0) == 0
+ && pmatch[0].rm_so <= l
+ ) {
l = pmatch[0].rm_so;
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++;
}
} else if (c[0] == '\0') { /* null split */
- while(*s) {
- *(s1++) = *(s++);
- *(s1++) = '\0';
+ while (*s) {
+ *s1++ = *s++;
+ *s1++ = '\0';
n++;
}
} else if (c[0] != ' ') { /* single-character split */
}
if (*s1) n++;
while ((s1 = strpbrk(s1, c))) {
- *(s1++) = '\0';
+ *s1++ = '\0';
n++;
}
} else { /* space split */
while (*s) {
- while (isspace(*s)) s++;
- if (! *s) break;
+ s = skip_whitespace(s);
+ if (!*s) break;
n++;
while (*s && !isspace(*s))
- *(s1++) = *(s++);
- *(s1++) = '\0';
+ *s1++ = *s++;
+ *s1++ = '\0';
}
}
return n;
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);
}
static void handle_special(var *v)
{
int n;
- char *b, *sep, *s;
+ char *b;
+ const char *sep, *s;
int sl, l, len, i, bsize;
- if (! (v->type & VF_SPECIAL))
+ if (!(v->type & VF_SPECIAL))
return;
if (v == V[NF]) {
memcpy(b+len, s, l);
len += l;
}
- if (b) b[len] = '\0';
+ if (b)
+ b[len] = '\0';
setvar_p(V[F0], b);
is_f0_split = TRUE;
} else if (v == V[IGNORECASE]) {
icase = istrue(v);
- } else { /* $n */
+ } else { /* $n */
n = getvar_i(V[NF]);
setvar_i(V[NF], n > v-Fields ? n : v-Fields+1);
/* right here v is invalid. Just to note... */
free(v->x.walker);
v->type |= VF_WALK;
- w = v->x.walker = (char **)xzalloc(2 + 2*sizeof(char *) + array->glen);
+ w = v->x.walker = xzalloc(2 + 2*sizeof(char *) + array->glen);
*w = *(w+1) = (char *)(w + 2);
for (i=0; i<array->csize; i++) {
hi = array->items[i];
- while(hi) {
+ while (hi) {
strcpy(*w, hi->name);
nextword(w);
hi = hi->next;
/* 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));
}
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)) {
static char *awk_printf(node *n)
{
char *b = NULL;
- char *fmt, *s, *s1, *f;
+ char *fmt, *s, *f;
+ const char *s1;
int i, j, incr, bsize;
char c, c1;
var *v, *arg;
v = nvalloc(1);
- fmt = f = bb_xstrdup(getvar_s(evaluate(nextarg(&n), v)));
+ fmt = f = xstrdup(getvar_s(evaluate(nextarg(&n), v)));
i = 0;
while (*f) {
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);
+ s1 = getvar_s(arg);
qrealloc(&b, incr+i+strlen(s1), &bsize);
i += sprintf(b+i, s, s1);
/* if there was an error while sprintf, return value is negative */
if (i < j) i = j;
-
}
- b = xrealloc(b, i+1);
+ b = xrealloc(b, i + 1);
free(fmt);
nvfree(v);
b[i] = '\0';
* all matches. If src or dst is NULL, use $0. If ex=TRUE, enable
* subexpression matching (\1-\9)
*/
-static int awk_sub(node *rn, char *repl, int nm, var *src, var *dest, int ex)
+static int awk_sub(node *rn, const char *repl, int nm, var *src, var *dest, int ex)
{
char *ds = NULL;
- char *sp, *s;
+ const char *s;
+ const char *sp;
int c, i, j, di, rl, so, eo, nbs, n, dssize;
regmatch_t pmatch[10];
regex_t sreg, *re;
var *tv;
node *an[4];
var *av[4];
- char *as[4];
+ const char *as[4];
regmatch_t pmatch[2];
regex_t sreg, *re;
static tsplitter tspl;
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);
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;
setvar_p(res, s);
break;
- case B_lo:
+ case B_an:
+ setvar_i(res, (long)getvar_i(av[0]) & (long)getvar_i(av[1]));
+ break;
+
+ case B_co:
+ setvar_i(res, ~(long)getvar_i(av[0]));
+ break;
+
+ case B_ls:
+ setvar_i(res, (long)getvar_i(av[0]) << (long)getvar_i(av[1]));
+ break;
+
+ case B_or:
+ setvar_i(res, (long)getvar_i(av[0]) | (long)getvar_i(av[1]));
+ break;
+
+ case B_rs:
+ setvar_i(res, (long)((unsigned long)getvar_i(av[0]) >> (unsigned long)getvar_i(av[1])));
+ break;
+
+ case B_xo:
+ setvar_i(res, (long)getvar_i(av[0]) ^ (long)getvar_i(av[1]));
+ break;
+
+ case B_lo:
to_xxx = tolower;
goto lo_cont;
- case B_up:
+ case B_up:
to_xxx = toupper;
-lo_cont:
- s1 = s = bb_xstrdup(as[0]);
+ lo_cont:
+ s1 = s = xstrdup(as[0]);
while (*s1) {
*s1 = (*to_xxx)(*s1);
s1++;
setvar_p(res, s);
break;
- case B_ix:
+ case B_ix:
n = 0;
ll = strlen(as[1]);
l = strlen(as[0]) - ll;
setvar_i(res, n);
break;
- case B_ti:
+ case B_ti:
if (nargs > 1)
tt = getvar_i(av[1]);
else
time(&tt);
- s = (nargs > 0) ? as[0] : "%a %b %d %H:%M:%S %Z %Y";
- i = strftime(buf, MAXVARFMT, s, localtime(&tt));
+ //s = (nargs > 0) ? as[0] : "%a %b %d %H:%M:%S %Z %Y";
+ i = strftime(buf, MAXVARFMT,
+ ((nargs > 0) ? as[0] : "%a %b %d %H:%M:%S %Z %Y"),
+ localtime(&tt));
buf[i] = '\0';
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) {
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;
}
{
/* 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;
union {
var *v;
- char *s;
+ const char *s;
double d;
int i;
} L, R;
uint32_t info;
} X;
- if (! op)
+ if (!op)
return setvar_s(res, NULL);
v1 = nvalloc(2);
/* -- 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)) {
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);
bb_perror_msg_and_die("popen");
X.rsm->is_pipe = 1;
} else {
- X.rsm->F = bb_xfopen(R.s, opn=='w' ? "w" : "a");
+ X.rsm->F = xfopen(R.s, opn=='w' ? "w" : "a");
}
}
X.F = X.rsm->F;
L.v = evaluate(nextarg(&op1), v1);
if (L.v->type & VF_NUMBER) {
fmt_num(buf, MAXVARFMT, getvar_s(V[OFMT]),
- getvar_i(L.v), TRUE);
+ getvar_i(L.v), TRUE);
fputs(buf, X.F);
} else {
fputs(getvar_s(L.v), X.F);
} else { /* OC_PRINTF */
L.s = awk_printf(op1);
fputs(L.s, X.F);
- free(L.s);
+ free((char*)L.s);
}
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;
}
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;
+ 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:
+ re_cont:
X.re = as_regex(op1, &sreg);
R.i = regexec(X.re, L.s, 0, NULL, 0);
if (X.re == &sreg) regfree(X.re);
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);
}
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);
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) {
X.rsm->F = popen(L.s, "r");
X.rsm->is_pipe = TRUE;
} else {
- X.rsm->F = fopen(L.s, "r"); /* not bb_xfopen! */
+ X.rsm->F = fopen(L.s, "r"); /* not xfopen! */
}
}
} else {
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 = (L.s && *L.s) ? (system(L.s) >> 8) : 0;
+ 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 {
}
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);
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 '!':
- L.d = istrue(X.v) ? 0 : 1;
+ 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];
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 = (char *)xmalloc(opn);
+ 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;
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 {
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)
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) {
+ while (hi) {
if (hi->data.rs.F && hi->data.rs.is_pipe)
pclose(hi->data.rs.F);
hi = hi->next;
{
char *exprc, *s, *s0, *s1;
- exprc = bb_xstrdup(expr);
+ exprc = xstrdup(expr);
if (!isalnum_(*exprc) || (s = strchr(exprc, '=')) == NULL) {
free(exprc);
return FALSE;
{
static rstream rsm;
FILE *F = NULL;
- char *fname, *ind;
+ const char *fname, *ind;
static int files_happen = FALSE;
if (rsm.F) fclose(rsm.F);
return &rsm;
}
+int awk_main(int argc, char **argv);
int awk_main(int argc, char **argv)
{
- char *s, *s1;
- int i, j, c, flen;
+ unsigned opt;
+ char *opt_F, *opt_W;
+ llist_t *opt_v = NULL;
+ 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;
+
+ /* Undo busybox.c, or else strtod may eat ','! This breaks parsing:
+ * $1,$2 == '$1,' '$2', NOT '$1' ',' '$2' */
+ if (ENABLE_LOCALE_SUPPORT)
+ setlocale(LC_NUMERIC, "C");
+
+ zero_out_var(&tv);
/* allocate global buffer */
- buf = xmalloc(MAXVARFMT+1);
+ buf = xmalloc(MAXVARFMT + 1);
vhash = hash_init();
ahash = hash_init();
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 = bb_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);
}
-
- while((c = getopt(argc, argv, "F:v:f:W:")) != EOF) {
- switch (c) {
- case 'F':
- setvar_s(V[FS], optarg);
- break;
- case 'v':
- if (! is_assignment(optarg))
- bb_show_usage();
- break;
- case 'f':
- from_file = TRUE;
- F = afopen(programname = optarg, "r");
- s = NULL;
- /* one byte is reserved for some trick in next_token */
- if (fseek(F, 0, SEEK_END) == 0) {
- flen = ftell(F);
- s = (char *)xmalloc(flen+4);
- fseek(F, 0, SEEK_SET);
- i = 1 + fread(s+1, 1, flen, F);
- } else {
- for (i=j=1; j>0; i+=j) {
- s = (char *)xrealloc(s, i+4096);
- j = fread(s+i, 1, 4094, F);
- }
- }
- s[i] = '\0';
- fclose(F);
- parse_program(s+1);
- free(s);
- break;
- case 'W':
- bb_error_msg("Warning: unrecognized option '-W %s' ignored\n", optarg);
- break;
-
- default:
- bb_show_usage();
- }
+ opt_complementary = "v::";
+ 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
+ opt_v = llist_rev(opt_v);
+ while (opt_v) { /* -v */
+ if (!is_assignment(llist_pop(&opt_v)))
+ bb_show_usage();
}
-
- if (!from_file) {
- if (argc == optind)
+ if (opt & 0x4) { // -f
+ char *s = s; /* die, gcc, die */
+ FILE *from_file = afopen(programname, "r");
+ /* one byte is reserved for some trick in next_token */
+ 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 = xrealloc(s, i + 4096);
+ j = fread(s + i, 1, 4094, from_file);
+ }
+ }
+ s[i] = '\0';
+ fclose(from_file);
+ parse_program(s + 1);
+ free(s);
+ } else { // no -f: take program from 1st parameter
+ if (!argc)
bb_show_usage();
- programname="cmd. line";
- parse_program(argv[optind++]);
-
+ programname = "cmd. line";
+ 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]);
break;
}
- if (c < 0)
+ if (i < 0)
runtime_error(strerror(errno));
iF = next_input_file();
-
}
awk_exit(EXIT_SUCCESS);
-
- return 0;
+ /*return 0;*/
}
-
projects / oweals / busybox.git / blobdiff