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Turn pack200 into an actual library

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This commit is contained in:
Petr Mrázek
2013-09-29 21:11:30 +02:00
parent d267d86f6e
commit 604162acdf
20 changed files with 583 additions and 1352 deletions
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36
depends/pack200/src/bands.cpp
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@ -34,6 +34,7 @@
#include <stdlib.h>
#include <stdarg.h>
#include <assert.h>
#include <stdint.h>
#include "defines.h"
#include "bytes.h"
@ -44,18 +45,8 @@
#include "constants.h"
#include "unpack.h"
inline void band::abort(const char *msg)
{
u->abort(msg);
}
inline bool band::aborting()
{
return u->aborting();
}
void band::readData(int expectedLength)
{
CHECK;
assert(expectedLength >= 0);
assert(vs[0].cmk == cmk_ERROR);
if (expectedLength != 0)
@ -82,7 +73,7 @@ void band::readData(int expectedLength)
// Make a conservatively generous estimate of band size in bytes.
// Assume B == 5 everywhere.
// Assume awkward pop with all {U} values (2*5 per value)
jlong generous = (jlong)length * (B_MAX * 3 + 1) + C_SLOP;
int64_t generous = (int64_t)length * (B_MAX * 3 + 1) + C_SLOP;
u->ensure_input(generous);
}
@ -102,7 +93,6 @@ void band::readData(int expectedLength)
assert(!valc->isMalloc);
}
xvs.init(u->rp, u->rplimit, valc);
CHECK;
int X = xvs.getInt();
if (valc->S() != 0)
{
@ -133,7 +123,6 @@ void band::readData(int expectedLength)
byte XB_byte = (byte)XB;
byte *XB_ptr = &XB_byte;
cm.init(u->rp, u->rplimit, XB_ptr, 0, defc, length, nullptr);
CHECK;
}
else
{
@ -162,7 +151,6 @@ void band::setIndexByTag(byte tag)
entry *band::getRefCommon(cpindex *ix_, bool nullOKwithCaller)
{
CHECK_0;
assert(ix_->ixTag == ixTag ||
(ixTag == CONSTANT_Literal && ix_->ixTag >= CONSTANT_Integer &&
ix_->ixTag <= CONSTANT_String));
@ -171,27 +159,26 @@ entry *band::getRefCommon(cpindex *ix_, bool nullOKwithCaller)
// But nullOKwithCaller means caller is willing to tolerate a nullptr.
entry *ref = ix_->get(n);
if (ref == nullptr && !(nullOKwithCaller && n == -1))
abort(n == -1 ? "nullptr ref" : "bad ref");
unpack_abort(n == -1 ? "nullptr ref" : "bad ref");
return ref;
}
jlong band::getLong(band &lo_band, bool have_hi)
int64_t band::getLong(band &lo_band, bool have_hi)
{
band &hi_band = (*this);
assert(lo_band.bn == hi_band.bn + 1);
uint lo = lo_band.getInt();
uint32_t lo = lo_band.getInt();
if (!have_hi)
{
assert(hi_band.length == 0);
return makeLong(0, lo);
}
uint hi = hi_band.getInt();
uint32_t hi = hi_band.getInt();
return makeLong(hi, lo);
}
int band::getIntTotal()
{
CHECK_0;
if (length == 0)
return 0;
if (total_memo > 0)
@ -201,8 +188,7 @@ int band::getIntTotal()
// and that the partial sums never overflow (wrap negative)
if (total < 0)
{
abort("overflow detected");
return 0;
unpack_abort("overflow detected");
}
for (int k = length - 1; k > 0; k--)
{
@ -210,8 +196,7 @@ int band::getIntTotal()
total += vs[0].getInt();
if (total < prev_total)
{
abort("overflow detected");
return 0;
unpack_abort("overflow detected");
}
}
rewind();
@ -221,7 +206,6 @@ int band::getIntTotal()
int band::getIntCount(int tag)
{
CHECK_0;
if (length == 0)
return 0;
if (tag >= HIST0_MIN && tag <= HIST0_MAX)
@ -230,7 +214,6 @@ int band::getIntCount(int tag)
{
// Lazily calculate an approximate histogram.
hist0 = U_NEW(int, (HIST0_MAX - HIST0_MIN) + 1);
CHECK_0;
for (int k = length; k > 0; k--)
{
int x = vs[0].getInt();
@ -404,7 +387,6 @@ const band_init all_band_inits[] =
BAND_INIT(file_modtime, DELTA5_spec, 0), BAND_INIT(file_options, UNSIGNED5_spec, 0),
// BAND_INIT(file_bits, BYTE1_spec, 0),
{0, 0}};
#define NUM_BAND_INITS (sizeof(all_band_inits) / sizeof(all_band_inits[0]))
band *band::makeBands(unpacker *u)
{
@ -434,7 +416,7 @@ void band::initIndexes(unpacker *u)
for (int i = 0; i < BAND_LIMIT; i++)
{
band *scan = &tmp_all_bands[i];
uint tag = scan->ixTag; // Cf. #define INDEX(tag) above
uint32_t tag = scan->ixTag; // Cf. #define INDEX(tag) above
if (tag != 0 && tag != CONSTANT_Literal && (tag & SUBINDEX_BIT) == 0)
{
scan->setIndex(u->cp.getIndex(tag));