diff options
Diffstat (limited to 'src/pdflib/pdcore/pc_string.c')
| -rw-r--r-- | src/pdflib/pdcore/pc_string.c | 514 |
1 files changed, 514 insertions, 0 deletions
diff --git a/src/pdflib/pdcore/pc_string.c b/src/pdflib/pdcore/pc_string.c new file mode 100644 index 0000000..f792ac1 --- /dev/null +++ b/src/pdflib/pdcore/pc_string.c @@ -0,0 +1,514 @@ +/*---------------------------------------------------------------------------* + | PDFlib - A library for generating PDF on the fly | + +---------------------------------------------------------------------------+ + | Copyright (c) 1997-2006 Thomas Merz and PDFlib GmbH. All rights reserved. | + +---------------------------------------------------------------------------+ + | | + | This software is subject to the PDFlib license. It is NOT in the | + | public domain. Extended versions and commercial licenses are | + | available, please check http://www.pdflib.com. | + | | + *---------------------------------------------------------------------------*/ + +/* $Id: pc_string.c,v 1.1 2008/10/17 06:10:43 scuri Exp $ + * + * The core string classes. + * + */ + +#include <string.h> + +#include "pc_util.h" +#include "pc_string.h" +#include "pc_ctype.h" + +#undef SBUF_RESERVE +#define SBUF_RESERVE PDC_STR_INLINE_CAP + + +/* TODO: + + - think over the pdcore temporary memory model. + + - s->buf should be reference-counted (delayed copy). +*/ + +void pdc_init_strings(pdc_core *pdc) +{ + pdc->bstr_pool = pdc_mp_new(pdc, sizeof (pdc_bstr)); + pdc->ustr_pool = pdc_mp_new(pdc, sizeof (pdc_ustr)); +} /* pdc_init_strings */ + +void pdc_cleanup_strings(pdc_core *pdc) +{ + pdc_mp_delete(pdc->bstr_pool); + pdc_mp_delete(pdc->ustr_pool); +} /* pdc_init_strings */ + + +/************************************************************************/ +/* */ +/* string object construction and deletion. */ +/* */ +/************************************************************************/ + +void +pdc_bs_boot(pdc_core *pdc, pdc_bstr *s) +{ + s->pdc = pdc; + s->buf = (pdc_byte *) 0; + s->len = 0; + s->cap = PDC_STR_INLINE_CAP; +} /* pdc_bs_boot */ + +void +pdc_us_boot(pdc_core *pdc, pdc_ustr *s) +{ + s->pdc = pdc; + s->buf = (pdc_ucval *) 0; + s->len = 0; + s->cap = PDC_STR_INLINE_CAP; +} /* pdc_us_boot */ + + +void +pdc_bs_shutdown(pdc_bstr *s) +{ + if (s->buf != (pdc_byte *) 0) + pdc_free(s->pdc, s->buf); + + pdc_bs_boot(s->pdc, s); +} /* pdc_bs_shutdown */ + +void +pdc_us_shutdown(pdc_ustr *s) +{ + if (s->buf != (pdc_ucval *) 0) + pdc_free(s->pdc, s->buf); + + pdc_us_boot(s->pdc, s); +} /* pdc_us_shutdown */ + + +#undef USE_POOL +#define USE_POOL + +pdc_bstr * +pdc_bs_new(pdc_core *pdc) +{ +#ifndef USE_POOL + static const char fn[] = "pdc_bs_new"; + + pdc_bstr *result = (pdc_bstr *) pdc_malloc(pdc, sizeof (pdc_bstr), fn); +#else + pdc_bstr *result = (pdc_bstr *) pdc_mp_alloc(pdc->bstr_pool); +#endif + + pdc_bs_boot(pdc, result); + return result; +} /* pdc_bs_new */ + +pdc_ustr * +pdc_us_new(pdc_core *pdc, const pdc_ucval *src, size_t len) +{ +#ifndef USE_POOL + static const char fn[] = "pdc_us_new"; + + pdc_ustr *result = (pdc_ustr *) pdc_malloc(pdc, sizeof (pdc_ustr), fn); +#else + pdc_ustr *result = (pdc_ustr *) pdc_mp_alloc(pdc->ustr_pool); +#endif + + pdc_us_boot(pdc, result); + pdc_us_write(result, src, len); + return result; +} /* pdc_us_new */ + + +pdc_bstr * +pdc_bs_dup(const pdc_bstr *src) +{ + const pdc_byte * buf = src->buf ? src->buf : src->buf0; + pdc_bstr * result = pdc_bs_new(src->pdc); + + pdc_bs_write(result, buf, src->len); + return result; +} /* pdc_bs_dup */ + +pdc_ustr * +pdc_us_dup(const pdc_ustr *src) +{ + const pdc_ucval *buf = src->buf ? src->buf : src->buf0; + + return pdc_us_new(src->pdc, buf, src->len); +} /* pdc_us_dup */ + + +void +pdc_bs_delete(pdc_bstr *s) +{ + pdc_bs_shutdown(s); +#ifndef USE_POOL + pdc_free(s->pdc, s); +#else + pdc_mp_free(s->pdc->bstr_pool, s); +#endif +} /* pdc_bs_delete */ + +void +pdc_us_delete(pdc_ustr *s) +{ + pdc_us_shutdown(s); +#ifndef USE_POOL + pdc_free(s->pdc, s); +#else + pdc_mp_free(s->pdc->ustr_pool, s); +#endif +} /* pdc_bs_delete */ + + +/************************************************************************/ +/* */ +/* "getters". */ +/* */ +/************************************************************************/ + +size_t +pdc_bs_length(const pdc_bstr *s) +{ + return s->len; +} /* pdc_bs_length */ + +size_t +pdc_us_length(const pdc_ustr *s) +{ + return s->len; +} /* pdc_us_length */ + + +pdc_byte +pdc_bs_get(const pdc_bstr *s, int idx) +{ + static const char fn[] = "pdc_bs_get"; + + const pdc_byte *buf = s->buf ? s->buf : s->buf0; + + if (idx < 0 || s->len <= (size_t) idx) + pdc_error(s->pdc, PDC_E_INT_ARRIDX, + pdc_errprintf(s->pdc, "%d", idx), fn, 0, 0); + + return buf[idx]; +} /* pdc_bs_get */ + +pdc_ucval +pdc_us_get(const pdc_ustr *s, int idx) +{ + static const char fn[] = "pdc_us_get"; + + const pdc_ucval *buf = s->buf ? s->buf : s->buf0; + + if (idx < 0 || s->len <= (size_t) idx) + pdc_error(s->pdc, PDC_E_INT_ARRIDX, + pdc_errprintf(s->pdc, "%d", idx), fn, 0, 0); + + return buf[idx]; +} /* pdc_us_get */ + + +const pdc_byte * +pdc_bs_get_cptr(const pdc_bstr *s) +{ + static const pdc_byte empty = 0; + + /* TODO: avoid the ugly "un-const" cast. */ + pdc_byte *buf = (pdc_byte *) (s->buf ? s->buf : s->buf0); + + if (!s->len) + return ∅ + + buf[s->len] = 0; + return buf; +} + +const pdc_byte * +pdc_us_get_cptr(const pdc_ustr *s) +{ + static const pdc_byte empty = 0; + + const pdc_ucval *buf = s->buf ? s->buf : s->buf0; + + if (!s->len) + return ∅ + + return (const pdc_byte *) buf; +} + + +/************************************************************************/ +/* */ +/* "modifiers". */ +/* */ +/************************************************************************/ + +void +pdc_bs_copy(pdc_bstr *dst, const pdc_bstr *src) +{ + const pdc_byte *buf = src->buf ? src->buf : src->buf0; + + dst->len = 0; + + if (src->len) + pdc_bs_write(dst, buf, src->len); +} /* pdc_bs_copy */ + +void +pdc_us_copy(pdc_ustr *dst, const pdc_ustr *src) +{ + const pdc_ucval *buf = src->buf ? src->buf : src->buf0; + + dst->len = 0; + + if (src->len) + pdc_us_write(dst, buf, src->len); +} /* pdc_us_copy */ + + +void +pdc_bs_substr(pdc_bstr *dst, const pdc_bstr *src, size_t pos, size_t len) +{ + static const char fn[] = "pdc_bs_substr"; + + const pdc_byte *buf = src->buf ? src->buf : src->buf0; + + if ((pos < 0) || (len < 0) || (pos > src->len) || ((pos + len) > src->len)) + pdc_error(src->pdc, PDC_E_INT_ILLARG, fn, 0, 0, 0); + + dst->len = 0; + pdc_bs_write(dst, buf + pos, len); +} /* pdc_bs_substr */ + +void +pdc_us_substr(pdc_ustr *dst, const pdc_ustr *src, size_t pos, size_t len) +{ + static const char fn[] = "pdc_us_substr"; + + const pdc_ucval *buf = src->buf ? src->buf : src->buf0; + + if ((pos < 0) || (len < 0) || (pos > src->len) || ((pos + len) > src->len)) + pdc_error(src->pdc, PDC_E_INT_ILLARG, fn, 0, 0, 0); + + dst->len = 0; + pdc_us_write(dst, buf + pos, len); +} /* pdc_us_substr */ + + +void +pdc_bs_concat(pdc_bstr *dst, const pdc_bstr *src) +{ + const pdc_byte *buf = src->buf ? src->buf : src->buf0; + + if (src->len) + pdc_bs_write(dst, buf, src->len); +} /* pdc_bs_concat */ + +void +pdc_us_concat(pdc_ustr *dst, const pdc_ustr *src) +{ + const pdc_ucval *buf = src->buf ? src->buf : src->buf0; + + if (src->len) + pdc_us_write(dst, buf, src->len); +} /* pdc_us_concat */ + + +void +pdc_bs_set(pdc_bstr *s, int idx, pdc_byte val) +{ + static const char fn[] = "pdc_bs_set"; + + pdc_byte *buf = s->buf ? s->buf : s->buf0; + + if (idx < 0 || s->len <= (size_t) idx) + pdc_error(s->pdc, PDC_E_INT_ARRIDX, + pdc_errprintf(s->pdc, "%d", idx), fn, 0, 0); + + buf[idx] = val; +} /* pdc_bs_set */ + +void +pdc_us_set(pdc_ustr *s, int idx, pdc_ucval val) +{ + static const char fn[] = "pdc_us_set"; + + pdc_ucval *buf = s->buf ? s->buf : s->buf0; + + if (idx < 0 || s->len <= (size_t) idx) + pdc_error(s->pdc, PDC_E_INT_ARRIDX, + pdc_errprintf(s->pdc, "%d", idx), fn, 0, 0); + + buf[idx] = val; +} /* pdc_us_set */ + + +void +pdc_bs_tolower(pdc_bstr *s) +{ + pdc_byte * buf = s->buf ? s->buf : s->buf0; + int i; + + for (i = 0; i < (int) s->len; ++i) + buf[i] = pdc_tolower(buf[i]); +} /* pdc_bs_tolower */ + +void +pdc_bs_toupper(pdc_bstr *s) +{ + pdc_byte * buf = s->buf ? s->buf : s->buf0; + int i; + + for (i = 0; i < (int) s->len; ++i) + buf[i] = pdc_toupper(buf[i]); +} /* pdc_bs_toupper */ + + +/************************************************************************/ +/* */ +/* stream-like functions. */ +/* */ +/************************************************************************/ + +void +pdc_bs_write(pdc_bstr *dst, const pdc_byte *src, size_t len) +{ + static const char fn[] = "pdc_bs_write"; + + pdc_byte *buf = dst->buf ? dst->buf : dst->buf0; + + if (!src || !len) + return; + + if (dst->cap < dst->len + len + 1) + { + dst->cap = dst->len + len + 1 + SBUF_RESERVE; + + if (!dst->buf) + { + dst->buf = (pdc_byte *) pdc_malloc(dst->pdc, dst->cap, fn); + memcpy(dst->buf, dst->buf0, dst->len); + } + else + { + dst->buf = (pdc_byte *) pdc_realloc(dst->pdc, + dst->buf, dst->cap, fn); + } + + buf = dst->buf; + } + + memcpy(buf + dst->len, src, len); + dst->len += len; +} /* pdc_bs_write */ + + +void +pdc_bs_puts(pdc_bstr *dst, const pdc_byte *src) +{ + if (!src) + return; + + pdc_bs_write(dst, src, strlen(src)); +} /* pdc_bs_puts */ + + +void +pdc_us_write(pdc_ustr *dst, const pdc_ucval *src, size_t len) +{ + static const char fn[] = "pdc_us_write"; + + pdc_ucval *buf = dst->buf ? dst->buf : dst->buf0; + + if (!src || len == 0) + return; + + if (dst->cap < dst->len + len) + { + dst->cap = dst->len + len + SBUF_RESERVE; + + if (!dst->buf) + { + dst->buf = (pdc_ucval *) + pdc_malloc(dst->pdc, dst->cap * sizeof (pdc_ucval), fn); + + memcpy(dst->buf, dst->buf0, dst->len * sizeof (pdc_ucval)); + } + else + { + dst->buf = (pdc_ucval *) pdc_realloc(dst->pdc, + dst->buf, dst->cap * sizeof (pdc_ucval), fn); + } + + buf = dst->buf; + } + + memcpy(buf + dst->len, src, len * sizeof (pdc_ucval)); + dst->len += len; +} /* pdc_us_write */ + + +void +pdc_bs_rewrite(pdc_bstr *s) +{ + s->len = 0; +} /* pdc_bs_rewrite */ + +void +pdc_us_rewrite(pdc_ustr *s) +{ + s->len = 0; +} /* pdc_us_rewrite */ + + +void +pdc_bs_putc(pdc_bstr *s, pdc_byte val) +{ + pdc_bs_write(s, &val, 1); +} /* pdc_bs_putc */ + +void +pdc_us_putc(pdc_ustr *s, pdc_ucval val) +{ + pdc_us_write(s, &val, 1); +} /* pdc_us_putc */ + + +/************************************************************************/ +/* */ +/* other utilities. */ +/* */ +/************************************************************************/ + +int +pdc_bs_compare(const pdc_bstr *s1, const pdc_bstr *s2) +{ + const char *buf1 = (const char *) (s1->buf ? s1->buf : s1->buf0); + const char *buf2 = (const char *) (s2->buf ? s2->buf : s2->buf0); + int result; + + if (s1->len < s2->len) + { + if ((result = strncmp(buf1, buf2, s1->len)) != 0) + return result; + + return -1; + } + + if (s2->len < s1->len) + { + if ((result = strncmp(buf1, buf2, s2->len)) != 0) + return result; + + return +1; + } + + return strncmp(buf1, buf2, s1->len); +} /* pdc_bs_compare */ |