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Diffstat (limited to 'tools/aapt/StringPool.cpp')
| -rw-r--r-- | tools/aapt/StringPool.cpp | 369 |
1 files changed, 369 insertions, 0 deletions
diff --git a/tools/aapt/StringPool.cpp b/tools/aapt/StringPool.cpp new file mode 100644 index 000000000000..878d3b1fea7e --- /dev/null +++ b/tools/aapt/StringPool.cpp @@ -0,0 +1,369 @@ +// +// Copyright 2006 The Android Open Source Project +// +// Build resource files from raw assets. +// + +#include "StringPool.h" + +#include <utils/ByteOrder.h> + +#define NOISY(x) //x + +void strcpy16_htod(uint16_t* dst, const uint16_t* src) +{ + while (*src) { + char16_t s = htods(*src); + *dst++ = s; + src++; + } + *dst = 0; +} + +void printStringPool(const ResStringPool* pool) +{ + const size_t NS = pool->size(); + for (size_t s=0; s<NS; s++) { + size_t len; + printf("String #%d: %s\n", s, + String8(pool->stringAt(s, &len)).string()); + } +} + +StringPool::StringPool(bool sorted) + : mSorted(sorted), mValues(-1), mIdents(-1) +{ +} + +ssize_t StringPool::add(const String16& value, bool mergeDuplicates) +{ + return add(String16(), value, mergeDuplicates); +} + +ssize_t StringPool::add(const String16& value, const Vector<entry_style_span>& spans) +{ + ssize_t res = add(String16(), value, false); + if (res >= 0) { + addStyleSpans(res, spans); + } + return res; +} + +ssize_t StringPool::add(const String16& ident, const String16& value, + bool mergeDuplicates) +{ + if (ident.size() > 0) { + ssize_t idx = mIdents.valueFor(ident); + if (idx >= 0) { + fprintf(stderr, "ERROR: Duplicate string identifier %s\n", + String8(mEntries[idx].value).string()); + return UNKNOWN_ERROR; + } + } + + ssize_t vidx = mValues.indexOfKey(value); + ssize_t pos = vidx >= 0 ? mValues.valueAt(vidx) : -1; + ssize_t eidx = pos >= 0 ? mEntryArray.itemAt(pos) : -1; + if (eidx < 0) { + eidx = mEntries.add(entry(value)); + if (eidx < 0) { + fprintf(stderr, "Failure adding string %s\n", String8(value).string()); + return eidx; + } + } + + const bool first = vidx < 0; + if (first || !mergeDuplicates) { + pos = mEntryArray.add(eidx); + if (first) { + vidx = mValues.add(value, pos); + const size_t N = mEntryArrayToValues.size(); + for (size_t i=0; i<N; i++) { + size_t& e = mEntryArrayToValues.editItemAt(i); + if ((ssize_t)e >= vidx) { + e++; + } + } + } + mEntryArrayToValues.add(vidx); + if (!mSorted) { + entry& ent = mEntries.editItemAt(eidx); + ent.indices.add(pos); + } + } + + if (ident.size() > 0) { + mIdents.add(ident, vidx); + } + + NOISY(printf("Adding string %s to pool: pos=%d eidx=%d vidx=%d\n", + String8(value).string(), pos, eidx, vidx)); + + return pos; +} + +status_t StringPool::addStyleSpan(size_t idx, const String16& name, + uint32_t start, uint32_t end) +{ + entry_style_span span; + span.name = name; + span.span.firstChar = start; + span.span.lastChar = end; + return addStyleSpan(idx, span); +} + +status_t StringPool::addStyleSpans(size_t idx, const Vector<entry_style_span>& spans) +{ + const size_t N=spans.size(); + for (size_t i=0; i<N; i++) { + status_t err = addStyleSpan(idx, spans[i]); + if (err != NO_ERROR) { + return err; + } + } + return NO_ERROR; +} + +status_t StringPool::addStyleSpan(size_t idx, const entry_style_span& span) +{ + LOG_ALWAYS_FATAL_IF(mSorted, "Can't use styles with sorted string pools."); + + // Place blank entries in the span array up to this index. + while (mEntryStyleArray.size() <= idx) { + mEntryStyleArray.add(); + } + + entry_style& style = mEntryStyleArray.editItemAt(idx); + style.spans.add(span); + return NO_ERROR; +} + +size_t StringPool::size() const +{ + return mSorted ? mValues.size() : mEntryArray.size(); +} + +const StringPool::entry& StringPool::entryAt(size_t idx) const +{ + if (!mSorted) { + return mEntries[mEntryArray[idx]]; + } else { + return mEntries[mEntryArray[mValues.valueAt(idx)]]; + } +} + +size_t StringPool::countIdentifiers() const +{ + return mIdents.size(); +} + +sp<AaptFile> StringPool::createStringBlock() +{ + sp<AaptFile> pool = new AaptFile(String8(), AaptGroupEntry(), + String8()); + status_t err = writeStringBlock(pool); + return err == NO_ERROR ? pool : NULL; +} + +status_t StringPool::writeStringBlock(const sp<AaptFile>& pool) +{ + // Allow appending. Sorry this is a little wacky. + if (pool->getSize() > 0) { + sp<AaptFile> block = createStringBlock(); + if (block == NULL) { + return UNKNOWN_ERROR; + } + ssize_t res = pool->writeData(block->getData(), block->getSize()); + return (res >= 0) ? (status_t)NO_ERROR : res; + } + + // First we need to add all style span names to the string pool. + // We do this now (instead of when the span is added) so that these + // will appear at the end of the pool, not disrupting the order + // our client placed their own strings in it. + + const size_t STYLES = mEntryStyleArray.size(); + size_t i; + + for (i=0; i<STYLES; i++) { + entry_style& style = mEntryStyleArray.editItemAt(i); + const size_t N = style.spans.size(); + for (size_t i=0; i<N; i++) { + entry_style_span& span = style.spans.editItemAt(i); + ssize_t idx = add(span.name, true); + if (idx < 0) { + fprintf(stderr, "Error adding span for style tag '%s'\n", + String8(span.name).string()); + return idx; + } + span.span.name.index = (uint32_t)idx; + } + } + + const size_t ENTRIES = size(); + + // Now build the pool of unique strings. + + const size_t STRINGS = mEntries.size(); + const size_t preSize = sizeof(ResStringPool_header) + + (sizeof(uint32_t)*ENTRIES) + + (sizeof(uint32_t)*STYLES); + if (pool->editData(preSize) == NULL) { + fprintf(stderr, "ERROR: Out of memory for string pool\n"); + return NO_MEMORY; + } + + size_t strPos = 0; + for (i=0; i<STRINGS; i++) { + entry& ent = mEntries.editItemAt(i); + const size_t strSize = (ent.value.size()); + const size_t lenSize = strSize > 0x7fff ? sizeof(uint32_t) : sizeof(uint16_t); + const size_t totalSize = lenSize + ((strSize+1)*sizeof(uint16_t)); + + ent.offset = strPos; + uint16_t* dat = (uint16_t*)pool->editData(preSize + strPos + totalSize); + if (dat == NULL) { + fprintf(stderr, "ERROR: Out of memory for string pool\n"); + return NO_MEMORY; + } + dat += (preSize+strPos)/sizeof(uint16_t); + if (lenSize > sizeof(uint16_t)) { + *dat = htods(0x8000 | ((strSize>>16)&0x7ffff)); + dat++; + } + *dat++ = htods(strSize); + strcpy16_htod(dat, ent.value); + + strPos += lenSize + (strSize+1)*sizeof(uint16_t); + } + + // Pad ending string position up to a uint32_t boundary. + + if (strPos&0x3) { + size_t padPos = ((strPos+3)&~0x3); + uint8_t* dat = (uint8_t*)pool->editData(preSize + padPos); + if (dat == NULL) { + fprintf(stderr, "ERROR: Out of memory padding string pool\n"); + return NO_MEMORY; + } + memset(dat+preSize+strPos, 0, padPos-strPos); + strPos = padPos; + } + + // Build the pool of style spans. + + size_t styPos = strPos; + for (i=0; i<STYLES; i++) { + entry_style& ent = mEntryStyleArray.editItemAt(i); + const size_t N = ent.spans.size(); + const size_t totalSize = (N*sizeof(ResStringPool_span)) + + sizeof(ResStringPool_ref); + + ent.offset = styPos-strPos; + uint8_t* dat = (uint8_t*)pool->editData(preSize + styPos + totalSize); + if (dat == NULL) { + fprintf(stderr, "ERROR: Out of memory for string styles\n"); + return NO_MEMORY; + } + ResStringPool_span* span = (ResStringPool_span*)(dat+preSize+styPos); + for (size_t i=0; i<N; i++) { + span->name.index = htodl(ent.spans[i].span.name.index); + span->firstChar = htodl(ent.spans[i].span.firstChar); + span->lastChar = htodl(ent.spans[i].span.lastChar); + span++; + } + span->name.index = htodl(ResStringPool_span::END); + + styPos += totalSize; + } + + if (STYLES > 0) { + // Add full terminator at the end (when reading we validate that + // the end of the pool is fully terminated to simplify error + // checking). + size_t extra = sizeof(ResStringPool_span)-sizeof(ResStringPool_ref); + uint8_t* dat = (uint8_t*)pool->editData(preSize + styPos + extra); + if (dat == NULL) { + fprintf(stderr, "ERROR: Out of memory for string styles\n"); + return NO_MEMORY; + } + uint32_t* p = (uint32_t*)(dat+preSize+styPos); + while (extra > 0) { + *p++ = htodl(ResStringPool_span::END); + extra -= sizeof(uint32_t); + } + styPos += extra; + } + + // Write header. + + ResStringPool_header* header = + (ResStringPool_header*)pool->padData(sizeof(uint32_t)); + if (header == NULL) { + fprintf(stderr, "ERROR: Out of memory for string pool\n"); + return NO_MEMORY; + } + memset(header, 0, sizeof(*header)); + header->header.type = htods(RES_STRING_POOL_TYPE); + header->header.headerSize = htods(sizeof(*header)); + header->header.size = htodl(pool->getSize()); + header->stringCount = htodl(ENTRIES); + header->styleCount = htodl(STYLES); + if (mSorted) { + header->flags |= htodl(ResStringPool_header::SORTED_FLAG); + } + header->stringsStart = htodl(preSize); + header->stylesStart = htodl(STYLES > 0 ? (preSize+strPos) : 0); + + // Write string index array. + + uint32_t* index = (uint32_t*)(header+1); + if (mSorted) { + for (i=0; i<ENTRIES; i++) { + entry& ent = const_cast<entry&>(entryAt(i)); + ent.indices.clear(); + ent.indices.add(i); + *index++ = htodl(ent.offset); + } + } else { + for (i=0; i<ENTRIES; i++) { + entry& ent = mEntries.editItemAt(mEntryArray[i]); + *index++ = htodl(ent.offset); + NOISY(printf("Writing entry #%d: \"%s\" ent=%d off=%d\n", i, + String8(ent.value).string(), + mEntryArray[i], ent.offset)); + } + } + + // Write style index array. + + if (mSorted) { + for (i=0; i<STYLES; i++) { + LOG_ALWAYS_FATAL("Shouldn't be here!"); + } + } else { + for (i=0; i<STYLES; i++) { + *index++ = htodl(mEntryStyleArray[i].offset); + } + } + + return NO_ERROR; +} + +ssize_t StringPool::offsetForString(const String16& val) const +{ + const Vector<size_t>* indices = offsetsForString(val); + ssize_t res = indices != NULL && indices->size() > 0 ? indices->itemAt(0) : -1; + NOISY(printf("Offset for string %s: %d (%s)\n", String8(val).string(), res, + res >= 0 ? String8(mEntries[mEntryArray[res]].value).string() : String8())); + return res; +} + +const Vector<size_t>* StringPool::offsetsForString(const String16& val) const +{ + ssize_t pos = mValues.valueFor(val); + if (pos < 0) { + return NULL; + } + return &mEntries[mEntryArray[pos]].indices; +} |