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Diffstat (limited to 'libbb')
-rw-r--r--libbb/dump.c298
1 files changed, 160 insertions, 138 deletions
diff --git a/libbb/dump.c b/libbb/dump.c
index 29c2c85ee..0d553d4d0 100644
--- a/libbb/dump.c
+++ b/libbb/dump.c
@@ -14,19 +14,6 @@
#include "libbb.h"
#include "dump.h"
-FS *bb_dump_fshead; /* head of format strings */
-off_t bb_dump_skip; /* bytes to skip */
-int bb_dump_blocksize; /* data block size */
-int bb_dump_length = -1; /* max bytes to read */
-smallint /*enum _vflag*/ bb_dump_vflag = FIRST;
-
-static FU *endfu;
-static char **_argv;
-static off_t savaddress; /* saved address/offset in stream */
-static off_t eaddress; /* end address */
-static off_t address; /* address/offset in stream */
-static int exitval; /* final exit value */
-
static const char index_str[] ALIGN1 = ".#-+ 0123456789";
static const char size_conv_str[] ALIGN1 =
@@ -34,7 +21,36 @@ static const char size_conv_str[] ALIGN1 =
static const char lcc[] ALIGN1 = "diouxX";
-int FAST_FUNC bb_dump_size(FS *fs)
+
+typedef struct priv_dumper_t {
+ dumper_t pub;
+
+ char **argv;
+ FU *endfu;
+ off_t savaddress; /* saved address/offset in stream */
+ off_t eaddress; /* end address */
+ off_t address; /* address/offset in stream */
+ int blocksize;
+ smallint exitval; /* final exit value */
+
+ /* former statics */
+ smallint next__done;
+ smallint get__ateof; // = 1;
+ unsigned char *get__curp;
+ unsigned char *get__savp;
+} priv_dumper_t;
+
+dumper_t* FAST_FUNC alloc_dumper(void)
+{
+ priv_dumper_t *dumper = xzalloc(sizeof(*dumper));
+ dumper->pub.dump_length = -1;
+ dumper->pub.dump_vflag = FIRST;
+ dumper->get__ateof = 1;
+ return &dumper->pub;
+}
+
+
+static NOINLINE int bb_dump_size(FS *fs)
{
FU *fu;
int bcnt, cur_size;
@@ -52,13 +68,14 @@ int FAST_FUNC bb_dump_size(FS *fs)
if (*fmt != '%')
continue;
/*
- * bb_dump_skip any special chars -- save precision in
+ * skip any special chars -- save precision in
* case it's a %s format.
*/
while (strchr(index_str + 1, *++fmt));
if (*fmt == '.' && isdigit(*++fmt)) {
prec = atoi(fmt);
- while (isdigit(*++fmt));
+ while (isdigit(*++fmt))
+ continue;
}
p = strchr(size_conv_str + 12, *fmt);
if (!p) {
@@ -79,7 +96,7 @@ int FAST_FUNC bb_dump_size(FS *fs)
return cur_size;
}
-static void rewrite(FS *fs)
+static void rewrite(priv_dumper_t *dumper, FS *fs)
{
enum { NOTOKAY, USEBCNT, USEPREC } sokay;
PR *pr, **nextpr = NULL;
@@ -104,7 +121,7 @@ static void rewrite(FS *fs)
* uninitialized 1st time through.
*/
- /* bb_dump_skip preceding text and up to the next % sign */
+ /* skip preceding text and up to the next % sign */
for (p1 = fmtp; *p1 && *p1 != '%'; ++p1)
continue;
@@ -121,11 +138,11 @@ static void rewrite(FS *fs)
*/
if (fu->bcnt) {
sokay = USEBCNT;
- /* bb_dump_skip to conversion character */
+ /* skip to conversion character */
for (++p1; strchr(index_str, *p1); ++p1)
continue;
} else {
- /* bb_dump_skip any special chars, field width */
+ /* skip any special chars, field width */
while (strchr(index_str + 1, *++p1))
continue;
if (*p1 == '.' && isdigit(*++p1)) {
@@ -137,7 +154,7 @@ static void rewrite(FS *fs)
sokay = NOTOKAY;
}
- p2 = p1 + 1; /* set end pointer */
+ p2 = p1 + 1; /* set end pointer */
/*
* figure out the byte count for each conversion;
@@ -198,7 +215,7 @@ static void rewrite(FS *fs)
++p2;
switch (p1[1]) {
case 'A':
- endfu = fu;
+ dumper->endfu = fu;
fu->flags |= F_IGNORE;
/* FALLTHROUGH */
case 'a':
@@ -274,7 +291,7 @@ static void rewrite(FS *fs)
}
/*
* if the format string interprets any data at all, and it's
- * not the same as the bb_dump_blocksize, and its last format unit
+ * not the same as the blocksize, and its last format unit
* interprets any data at all, and has no iteration count,
* repeat it as necessary.
*
@@ -282,10 +299,10 @@ static void rewrite(FS *fs)
* gets output from the last iteration of the format unit.
*/
for (fu = fs->nextfu;; fu = fu->nextfu) {
- if (!fu->nextfu && fs->bcnt < bb_dump_blocksize
+ if (!fu->nextfu && fs->bcnt < dumper->blocksize
&& !(fu->flags & F_SETREP) && fu->bcnt
) {
- fu->reps += (bb_dump_blocksize - fs->bcnt) / fu->bcnt;
+ fu->reps += (dumper->blocksize - fs->bcnt) / fu->bcnt;
}
if (fu->reps > 1) {
for (pr = fu->nextpr;; pr = pr->nextpr)
@@ -301,7 +318,7 @@ static void rewrite(FS *fs)
}
}
-static void do_skip(const char *fname, int statok)
+static void do_skip(priv_dumper_t *dumper, const char *fname, int statok)
{
struct stat sbuf;
@@ -309,125 +326,122 @@ static void do_skip(const char *fname, int statok)
if (fstat(STDIN_FILENO, &sbuf)) {
bb_simple_perror_msg_and_die(fname);
}
- if ((!(S_ISCHR(sbuf.st_mode) ||
- S_ISBLK(sbuf.st_mode) ||
- S_ISFIFO(sbuf.st_mode))) && bb_dump_skip >= sbuf.st_size) {
- /* If bb_dump_size valid and bb_dump_skip >= size */
- bb_dump_skip -= sbuf.st_size;
- address += sbuf.st_size;
+ if (!(S_ISCHR(sbuf.st_mode) || S_ISBLK(sbuf.st_mode) || S_ISFIFO(sbuf.st_mode))
+ && dumper->pub.dump_skip >= sbuf.st_size
+ ) {
+ /* If bb_dump_size valid and pub.dump_skip >= size */
+ dumper->pub.dump_skip -= sbuf.st_size;
+ dumper->address += sbuf.st_size;
return;
}
}
- if (fseek(stdin, bb_dump_skip, SEEK_SET)) {
+ if (fseek(stdin, dumper->pub.dump_skip, SEEK_SET)) {
bb_simple_perror_msg_and_die(fname);
}
- savaddress = address += bb_dump_skip;
- bb_dump_skip = 0;
+ dumper->address += dumper->pub.dump_skip;
+ dumper->savaddress = dumper->address;
+ dumper->pub.dump_skip = 0;
}
-static int next(char **argv)
+static NOINLINE int next(priv_dumper_t *dumper)
{
- static smallint done;
-
int statok;
- if (argv) {
- _argv = argv;
- return 1;
- }
for (;;) {
- if (*_argv) {
- if (!(freopen(*_argv, "r", stdin))) {
- bb_simple_perror_msg(*_argv);
- exitval = 1;
- ++_argv;
+ if (*dumper->argv) {
+ if (!(freopen(*dumper->argv, "r", stdin))) {
+ bb_simple_perror_msg(*dumper->argv);
+ dumper->exitval = 1;
+ ++dumper->argv;
continue;
}
- done = statok = 1;
+ dumper->next__done = statok = 1;
} else {
- if (done)
+ if (dumper->next__done)
return 0;
- done = 1;
+ dumper->next__done = 1;
statok = 0;
}
- if (bb_dump_skip)
- do_skip(statok ? *_argv : "stdin", statok);
- if (*_argv)
- ++_argv;
- if (!bb_dump_skip)
+ if (dumper->pub.dump_skip)
+ do_skip(dumper, statok ? *dumper->argv : "stdin", statok);
+ if (*dumper->argv)
+ ++dumper->argv;
+ if (!dumper->pub.dump_skip)
return 1;
}
/* NOTREACHED */
}
-static unsigned char *get(void)
+static unsigned char *get(priv_dumper_t *dumper)
{
- static smallint ateof = 1;
- static unsigned char *curp = NULL, *savp; /*DBU:[dave@cray.com]initialize curp */
-
int n;
int need, nread;
unsigned char *tmpp;
+ int blocksize = dumper->blocksize;
- if (!curp) {
- address = (off_t)0; /*DBU:[dave@cray.com] initialize,initialize..*/
- curp = xmalloc(bb_dump_blocksize);
- savp = xmalloc(bb_dump_blocksize);
+ if (!dumper->get__curp) {
+ dumper->address = (off_t)0; /*DBU:[dave@cray.com] initialize,initialize..*/
+ dumper->get__curp = xmalloc(blocksize);
+ dumper->get__savp = xmalloc(blocksize);
} else {
- tmpp = curp;
- curp = savp;
- savp = tmpp;
- address = savaddress += bb_dump_blocksize;
+ tmpp = dumper->get__curp;
+ dumper->get__curp = dumper->get__savp;
+ dumper->get__savp = tmpp;
+ dumper->savaddress += blocksize;
+ dumper->address = dumper->savaddress;
}
- for (need = bb_dump_blocksize, nread = 0;;) {
+ need = blocksize;
+ nread = 0;
+ while (1) {
/*
* if read the right number of bytes, or at EOF for one file,
* and no other files are available, zero-pad the rest of the
* block and set the end flag.
*/
- if (!bb_dump_length || (ateof && !next(NULL))) {
- if (need == bb_dump_blocksize) {
+ if (!dumper->pub.dump_length || (dumper->get__ateof && !next(dumper))) {
+ if (need == blocksize) {
return NULL;
}
- if (bb_dump_vflag != ALL && !memcmp(curp, savp, nread)) {
- if (bb_dump_vflag != DUP) {
+ if (dumper->pub.dump_vflag != ALL && !memcmp(dumper->get__curp, dumper->get__savp, nread)) {
+ if (dumper->pub.dump_vflag != DUP) {
puts("*");
}
return NULL;
}
- memset(curp + nread, 0, need);
- eaddress = address + nread;
- return curp;
+ memset(dumper->get__curp + nread, 0, need);
+ dumper->eaddress = dumper->address + nread;
+ return dumper->get__curp;
}
- n = fread(curp + nread, sizeof(unsigned char),
- bb_dump_length == -1 ? need : MIN(bb_dump_length, need), stdin);
+ n = fread(dumper->get__curp + nread, sizeof(unsigned char),
+ dumper->pub.dump_length == -1 ? need : MIN(dumper->pub.dump_length, need), stdin);
if (!n) {
if (ferror(stdin)) {
- bb_simple_perror_msg(_argv[-1]);
+ bb_simple_perror_msg(dumper->argv[-1]);
}
- ateof = 1;
+ dumper->get__ateof = 1;
continue;
}
- ateof = 0;
- if (bb_dump_length != -1) {
- bb_dump_length -= n;
+ dumper->get__ateof = 0;
+ if (dumper->pub.dump_length != -1) {
+ dumper->pub.dump_length -= n;
}
need -= n;
if (!need) {
- if (bb_dump_vflag == ALL || bb_dump_vflag == FIRST
- || memcmp(curp, savp, bb_dump_blocksize)
+ if (dumper->pub.dump_vflag == ALL || dumper->pub.dump_vflag == FIRST
+ || memcmp(dumper->get__curp, dumper->get__savp, blocksize)
) {
- if (bb_dump_vflag == DUP || bb_dump_vflag == FIRST) {
- bb_dump_vflag = WAIT;
+ if (dumper->pub.dump_vflag == DUP || dumper->pub.dump_vflag == FIRST) {
+ dumper->pub.dump_vflag = WAIT;
}
- return curp;
+ return dumper->get__curp;
}
- if (bb_dump_vflag == WAIT) {
+ if (dumper->pub.dump_vflag == WAIT) {
puts("*");
}
- bb_dump_vflag = DUP;
- address = savaddress += bb_dump_blocksize;
- need = bb_dump_blocksize;
+ dumper->pub.dump_vflag = DUP;
+ dumper->savaddress += blocksize;
+ dumper->address = dumper->savaddress;
+ need = blocksize;
nread = 0;
} else {
nread += n;
@@ -515,29 +529,31 @@ static void conv_u(PR *pr, unsigned char *p)
}
}
-static void display(void)
+static void display(priv_dumper_t* dumper)
{
-/* extern FU *endfu; */
FS *fs;
FU *fu;
PR *pr;
int cnt;
- unsigned char *bp;
+ unsigned char *bp, *savebp;
off_t saveaddress;
- unsigned char savech = 0, *savebp;
+ unsigned char savech = '\0';
- while ((bp = get()) != NULL) {
- for (fs = bb_dump_fshead, savebp = bp, saveaddress = address; fs;
- fs = fs->nextfs, bp = savebp, address = saveaddress) {
+ while ((bp = get(dumper)) != NULL) {
+ fs = dumper->pub.fshead;
+ savebp = bp;
+ saveaddress = dumper->address;
+ for (; fs; fs = fs->nextfs, bp = savebp, dumper->address = saveaddress) {
for (fu = fs->nextfu; fu; fu = fu->nextfu) {
if (fu->flags & F_IGNORE) {
break;
}
for (cnt = fu->reps; cnt; --cnt) {
- for (pr = fu->nextpr; pr; address += pr->bcnt,
- bp += pr->bcnt, pr = pr->nextpr) {
- if (eaddress && address >= eaddress &&
- !(pr->flags & (F_TEXT | F_BPAD))) {
+ for (pr = fu->nextpr; pr; dumper->address += pr->bcnt,
+ bp += pr->bcnt, pr = pr->nextpr) {
+ if (dumper->eaddress && dumper->address >= dumper->eaddress
+ && !(pr->flags & (F_TEXT | F_BPAD))
+ ) {
bpad(pr);
}
if (cnt == 1 && pr->nospace) {
@@ -547,7 +563,7 @@ static void display(void)
/* PRINT; */
switch (pr->flags) {
case F_ADDRESS:
- printf(pr->fmt, (unsigned) address);
+ printf(pr->fmt, (unsigned) dumper->address);
break;
case F_BPAD:
printf(pr->fmt, "");
@@ -558,7 +574,7 @@ static void display(void)
case F_CHAR:
printf(pr->fmt, *bp);
break;
- case F_DBL:{
+ case F_DBL: {
double dval;
float fval;
@@ -574,7 +590,7 @@ static void display(void)
}
break;
}
- case F_INT:{
+ case F_INT: {
int ival;
short sval;
@@ -605,7 +621,7 @@ static void display(void)
case F_U:
conv_u(pr, bp);
break;
- case F_UINT:{
+ case F_UINT: {
unsigned ival;
unsigned short sval;
@@ -633,21 +649,21 @@ static void display(void)
}
}
}
- if (endfu) {
+ if (dumper->endfu) {
/*
- * if eaddress not set, error or file bb_dump_size was multiple of
- * bb_dump_blocksize, and no partial block ever found.
+ * if eaddress not set, error or file size was multiple
+ * of blocksize, and no partial block ever found.
*/
- if (!eaddress) {
- if (!address) {
+ if (!dumper->eaddress) {
+ if (!dumper->address) {
return;
}
- eaddress = address;
+ dumper->eaddress = dumper->address;
}
- for (pr = endfu->nextpr; pr; pr = pr->nextpr) {
+ for (pr = dumper->endfu->nextpr; pr; pr = pr->nextpr) {
switch (pr->flags) {
case F_ADDRESS:
- printf(pr->fmt, (unsigned) eaddress);
+ printf(pr->fmt, (unsigned) dumper->eaddress);
break;
case F_TEXT:
printf(pr->fmt);
@@ -657,52 +673,58 @@ static void display(void)
}
}
-int FAST_FUNC bb_dump_dump(char **argv)
+#define dumper ((priv_dumper_t*)pub_dumper)
+int FAST_FUNC bb_dump_dump(dumper_t *pub_dumper, char **argv)
{
FS *tfs;
+ int blocksize;
/* figure out the data block bb_dump_size */
- for (bb_dump_blocksize = 0, tfs = bb_dump_fshead; tfs; tfs = tfs->nextfs) {
+ blocksize = 0;
+ tfs = dumper->pub.fshead;
+ while (tfs) {
tfs->bcnt = bb_dump_size(tfs);
- if (bb_dump_blocksize < tfs->bcnt) {
- bb_dump_blocksize = tfs->bcnt;
+ if (blocksize < tfs->bcnt) {
+ blocksize = tfs->bcnt;
}
+ tfs = tfs->nextfs;
}
+ dumper->blocksize = blocksize;
+
/* rewrite the rules, do syntax checking */
- for (tfs = bb_dump_fshead; tfs; tfs = tfs->nextfs) {
- rewrite(tfs);
+ for (tfs = dumper->pub.fshead; tfs; tfs = tfs->nextfs) {
+ rewrite(dumper, tfs);
}
- next(argv);
- display();
+ dumper->argv = argv;
+ display(dumper);
- return exitval;
+ return dumper->exitval;
}
-void FAST_FUNC bb_dump_add(const char *fmt)
+void FAST_FUNC bb_dump_add(dumper_t* pub_dumper, const char *fmt)
{
- static FS **nextfs;
-
const char *p;
char *p1;
char *p2;
FS *tfs;
- FU *tfu, **nextfu;
+ FU *tfu, **nextfupp;
const char *savep;
/* start new linked list of format units */
tfs = xzalloc(sizeof(FS)); /*DBU:[dave@cray.com] start out NULL */
- if (!bb_dump_fshead) {
- bb_dump_fshead = tfs;
+ if (!dumper->pub.fshead) {
+ dumper->pub.fshead = tfs;
} else {
- *nextfs = tfs;
+ FS *fslast = dumper->pub.fshead;
+ while (fslast->nextfs)
+ fslast = fslast->nextfs;
+ fslast->nextfs = tfs;
}
- nextfs = &tfs->nextfs;
- nextfu = &tfs->nextfu;
+ nextfupp = &tfs->nextfu;
/* take the format string and break it up into format units */
for (p = fmt;;) {
- /* bb_dump_skip leading white space */
p = skip_whitespace(p);
if (!*p) {
break;
@@ -712,8 +734,8 @@ void FAST_FUNC bb_dump_add(const char *fmt)
/* NOSTRICT */
/* DBU:[dave@cray.com] zalloc so that forward pointers start out NULL */
tfu = xzalloc(sizeof(FU));
- *nextfu = tfu;
- nextfu = &tfu->nextfu;
+ *nextfupp = tfu;
+ nextfupp = &tfu->nextfu;
tfu->reps = 1;
/* if leading digit, repetition count */
@@ -726,11 +748,11 @@ void FAST_FUNC bb_dump_add(const char *fmt)
/* may overwrite either white space or slash */
tfu->reps = atoi(savep);
tfu->flags = F_SETREP;
- /* bb_dump_skip trailing white space */
+ /* skip trailing white space */
p = skip_whitespace(++p);
}
- /* bb_dump_skip slash and trailing white space */
+ /* skip slash and trailing white space */
if (*p == '/') {
p = skip_whitespace(++p);
}
@@ -745,7 +767,7 @@ void FAST_FUNC bb_dump_add(const char *fmt)
bb_error_msg_and_die("bad format {%s}", fmt);
}
tfu->bcnt = atoi(savep);
- /* bb_dump_skip trailing white space */
+ /* skip trailing white space */
p = skip_whitespace(++p);
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-24 05:05:21 +0000