From c876d3bbefe0dc00c27ca0c12d29da5874946962 Mon Sep 17 00:00:00 2001 From: Dominik Riebeling Date: Wed, 15 Dec 2021 21:04:28 +0100 Subject: rbutil: Merge rbutil with utils folder. rbutil uses several components from the utils folder, and can be considered part of utils too. Having it in a separate folder is an arbitrary split that doesn't help anymore these days, so merge them. This also allows other utils to easily use libtools.make without the need to navigate to a different folder. Change-Id: I3fc2f4de19e3e776553efb5dea5f779dfec0dc21 --- utils/rbutilqt/mspack/system-mspack.c | 240 ++++++++++++++++++++++++++++++++++ 1 file changed, 240 insertions(+) create mode 100644 utils/rbutilqt/mspack/system-mspack.c (limited to 'utils/rbutilqt/mspack/system-mspack.c') diff --git a/utils/rbutilqt/mspack/system-mspack.c b/utils/rbutilqt/mspack/system-mspack.c new file mode 100644 index 0000000000..9d4886a8db --- /dev/null +++ b/utils/rbutilqt/mspack/system-mspack.c @@ -0,0 +1,240 @@ +/* This file is part of libmspack. + * (C) 2003-2004 Stuart Caie. + * + * libmspack is free software; you can redistribute it and/or modify it under + * the terms of the GNU Lesser General Public License (LGPL) version 2.1 + * + * For further details, see the file COPYING.LIB distributed with libmspack + */ + +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif + +#include "system-mspack.h" + +#ifndef LARGEFILE_SUPPORT +const char *largefile_msg = "library not compiled to support large files."; +#endif + + +int mspack_version(int entity) { + switch (entity) { + /* CHM decoder version 1 -> 2 changes: + * - added mschmd_sec_mscompressed::spaninfo + * - added mschmd_header::first_pmgl + * - added mschmd_header::last_pmgl + * - added mschmd_header::chunk_cache; + */ + case MSPACK_VER_MSCHMD: + return 2; + case MSPACK_VER_LIBRARY: + case MSPACK_VER_SYSTEM: + case MSPACK_VER_MSCABD: + case MSPACK_VER_MSSZDDD: + case MSPACK_VER_MSKWAJD: + return 1; + case MSPACK_VER_MSCABC: + case MSPACK_VER_MSCHMC: + case MSPACK_VER_MSLITD: + case MSPACK_VER_MSLITC: + case MSPACK_VER_MSHLPD: + case MSPACK_VER_MSHLPC: + case MSPACK_VER_MSSZDDC: + case MSPACK_VER_MSKWAJC: + return 0; + } + return -1; +} + +int mspack_sys_selftest_internal(int offt_size) { + return (sizeof(off_t) == offt_size) ? MSPACK_ERR_OK : MSPACK_ERR_SEEK; +} + +/* validates a system structure */ +int mspack_valid_system(struct mspack_system *sys) { + return (sys != NULL) && (sys->open != NULL) && (sys->close != NULL) && + (sys->read != NULL) && (sys->write != NULL) && (sys->seek != NULL) && + (sys->tell != NULL) && (sys->message != NULL) && (sys->alloc != NULL) && + (sys->free != NULL) && (sys->copy != NULL) && (sys->null_ptr == NULL); +} + +/* returns the length of a file opened for reading */ +int mspack_sys_filelen(struct mspack_system *system, + struct mspack_file *file, off_t *length) +{ + off_t current; + + if (!system || !file || !length) return MSPACK_ERR_OPEN; + + /* get current offset */ + current = system->tell(file); + + /* seek to end of file */ + if (system->seek(file, (off_t) 0, MSPACK_SYS_SEEK_END)) { + return MSPACK_ERR_SEEK; + } + + /* get offset of end of file */ + *length = system->tell(file); + + /* seek back to original offset */ + if (system->seek(file, current, MSPACK_SYS_SEEK_START)) { + return MSPACK_ERR_SEEK; + } + + return MSPACK_ERR_OK; +} + + + +/* definition of mspack_default_system -- if the library is compiled with + * MSPACK_NO_DEFAULT_SYSTEM, no default system will be provided. Otherwise, + * an appropriate default system (e.g. the standard C library, or some native + * API calls) + */ + +#ifdef MSPACK_NO_DEFAULT_SYSTEM +struct mspack_system *mspack_default_system = NULL; +#else + +/* implementation of mspack_default_system for standard C library */ + +#include +#include +#include +#include + +struct mspack_file_p { + FILE *fh; + const char *name; +}; + +static struct mspack_file *msp_open(struct mspack_system *self, + const char *filename, int mode) +{ + struct mspack_file_p *fh; + const char *fmode; + (void)self; + + switch (mode) { + case MSPACK_SYS_OPEN_READ: fmode = "rb"; break; + case MSPACK_SYS_OPEN_WRITE: fmode = "wb"; break; + case MSPACK_SYS_OPEN_UPDATE: fmode = "r+b"; break; + case MSPACK_SYS_OPEN_APPEND: fmode = "ab"; break; + default: return NULL; + } + + if ((fh = (struct mspack_file_p *) malloc(sizeof(struct mspack_file_p)))) { + fh->name = filename; + if ((fh->fh = fopen(filename, fmode))) return (struct mspack_file *) fh; + free(fh); + } + return NULL; +} + +static void msp_close(struct mspack_file *file) { + struct mspack_file_p *self = (struct mspack_file_p *) file; + if (self) { + fclose(self->fh); + free(self); + } +} + +static int msp_read(struct mspack_file *file, void *buffer, int bytes) { + struct mspack_file_p *self = (struct mspack_file_p *) file; + if (self && buffer && bytes >= 0) { + size_t count = fread(buffer, 1, (size_t) bytes, self->fh); + if (!ferror(self->fh)) return (int) count; + } + return -1; +} + +static int msp_write(struct mspack_file *file, void *buffer, int bytes) { + struct mspack_file_p *self = (struct mspack_file_p *) file; + if (self && buffer && bytes >= 0) { + size_t count = fwrite(buffer, 1, (size_t) bytes, self->fh); + if (!ferror(self->fh)) return (int) count; + } + return -1; +} + +static int msp_seek(struct mspack_file *file, off_t offset, int mode) { + struct mspack_file_p *self = (struct mspack_file_p *) file; + if (self) { + switch (mode) { + case MSPACK_SYS_SEEK_START: mode = SEEK_SET; break; + case MSPACK_SYS_SEEK_CUR: mode = SEEK_CUR; break; + case MSPACK_SYS_SEEK_END: mode = SEEK_END; break; + default: return -1; + } +#ifdef HAVE_FSEEKO + return fseeko(self->fh, offset, mode); +#else + return fseek(self->fh, offset, mode); +#endif + } + return -1; +} + +static off_t msp_tell(struct mspack_file *file) { + struct mspack_file_p *self = (struct mspack_file_p *) file; +#ifdef HAVE_FSEEKO + return (self) ? (off_t) ftello(self->fh) : 0; +#else + return (self) ? (off_t) ftell(self->fh) : 0; +#endif +} + +static void msp_msg(struct mspack_file *file, const char *format, ...) { + va_list ap; + if (file) fprintf(stderr, "%s: ", ((struct mspack_file_p *) file)->name); + va_start(ap, format); + vfprintf(stderr, format, ap); + va_end(ap); + fputc((int) '\n', stderr); + fflush(stderr); +} + +static void *msp_alloc(struct mspack_system *self, size_t bytes) { +#ifdef DEBUG + /* make uninitialised data obvious */ + char *buf = malloc(bytes + 8); + (void)self; + if (buf) memset(buf, 0xDC, bytes); + *((size_t *)buf) = bytes; + return &buf[8]; +#else + (void)self; + return malloc(bytes); +#endif +} + +static void msp_free(void *buffer) { +#ifdef DEBUG + char *buf = buffer; + size_t bytes; + if (buf) { + buf -= 8; + bytes = *((size_t *)buf); + /* make freed data obvious */ + memset(buf, 0xED, bytes); + free(buf); + } +#else + free(buffer); +#endif +} + +static void msp_copy(void *src, void *dest, size_t bytes) { + memcpy(dest, src, bytes); +} + +static struct mspack_system msp_system = { + &msp_open, &msp_close, &msp_read, &msp_write, &msp_seek, + &msp_tell, &msp_msg, &msp_alloc, &msp_free, &msp_copy, NULL +}; + +struct mspack_system *mspack_default_system = &msp_system; + +#endif -- cgit v1.2.3