diff options
| -rw-r--r-- | INSTALL | 27 | ||||
| -rw-r--r-- | LICENSE | 674 | ||||
| -rw-r--r-- | Makefile | 43 | ||||
| -rw-r--r-- | cpc.c | 497 | ||||
| -rw-r--r-- | cpc.h | 35 | ||||
| -rw-r--r-- | ditool.c | 419 | ||||
| -rw-r--r-- | handler.h | 95 | ||||
| -rw-r--r-- | util.c | 172 | ||||
| -rw-r--r-- | util.h | 65 |
9 files changed, 2027 insertions, 0 deletions
@@ -0,0 +1,27 @@ + +This program does not unfortunately use the configure script, but I have been +careful to write is as portably as possible -- it should only be using ISO C. + +In fact the only non-portable part is perhaps the Makefile for non UNIX-like +systems. + + +UNIX-like systems +================= + +To build the software on unix, or a compatible build system (eg. cygwin), +type the following: + + make + +Then copy the ditool executable wherever you want. + + +Other or broken systems +======================= + +If the Makefile is not usable on your system, you simply need to compile all +the .c files and produce a single ditool object. E.g. (using the cc command +as an example): + + cc -o ditool *.c @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/> + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. By contrast, +the GNU General Public License is intended to guarantee your freedom to +share and change all versions of a program--to make sure it remains free +software for all its users. We, the Free Software Foundation, use the +GNU General Public License for most of our software; it applies also to +any other work released this way by its authors. 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If not, see <http://www.gnu.org/licenses/>. + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + {project} Copyright (C) {year} {fullname} + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +<http://www.gnu.org/licenses/>. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +<http://www.gnu.org/philosophy/why-not-lgpl.html>. diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..8882ae7 --- /dev/null +++ b/Makefile @@ -0,0 +1,43 @@ +# DiskImageTool - Tool for manipulating disk images +# +# Copyright (C) 2019 Ian Cowburn (ianc@noddybox.demon.co.uk) +# +# This program is free software: you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see <http://www.gnu.org/licenses/>. +# +# ------------------------------------------------------------------------- +# +# Makefile +# + +CFLAGS += -g + +TARGET = ditool + +SOURCE = ditool.c \ + util.c \ + cpc.c + +OBJECTS = ditool.o \ + util.o \ + cpc.o + +$(TARGET): $(OBJECTS) + $(CC) $(CLAGS) -o $(TARGET) $(OBJECTS) + +clean: + rm -f $(TARGET) $(TARGET).exe $(OBJECTS) core *.core + +cpc.o: cpc.c handler.h util.h cpc.h +ditool.o: ditool.c util.h handler.h cpc.h +util.o: util.c util.h @@ -0,0 +1,497 @@ +/* + + DiskImageTool - Tool for manipulating disk images - CPC DSK images + + Copyright (C) 2019 Ian Cowburn (ianc@noddybox.co.uk) + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. + + ------------------------------------------------------------------------- + + CPC DSK images + +*/ +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include <stdarg.h> + +#include "handler.h" +#include "util.h" +#include "cpc.h" + +/* ---------------------------------------- TYPES +*/ + +typedef struct +{ + int id; + int size; + int reg1; + int reg2; + char data[512]; +} Sector; + +typedef struct +{ + int track_no; + int side_no; + int no_sectors; + int track_size; + int sector_size; + int gap3_length; + int filler_byte; + int formatted; + Sector sector[10]; +} Track; + +typedef struct +{ + int no_tracks; + Track track[80]; +} Disk; + +typedef enum +{ + UnknownFormat, + FormatIBM, + FormatSystem, + FormatData +} DiskFormat; + +/* ---------------------------------------- GLOBALS +*/ +static char g_last_error[4096]; +static int g_is_extended; +static unsigned char *g_mem; +static size_t g_size; +static Disk g_disk; +static DiskFormat g_format; + +/* ---------------------------------------- UTILS +*/ +static int ImageError(const char *format, ...) +{ + va_list va; + + va_start(va, format); + vsnprintf(g_last_error, sizeof g_last_error, format, va); + va_end(va); + + if (g_mem) + { + free(g_mem); + g_mem = NULL; + g_size = 0; + } + + return 0; +} + +static int GetWord(int offset) +{ + int i; + + i = g_mem[offset]; + i|= (int)g_mem[offset+1] * 256; + + return i; +} + +static int LowSectorID(int track) +{ + int f; + int id = 256; + + for(f = 0; f < g_disk.track[f].no_sectors; f++) + { + if (g_disk.track[track].sector[f].id < id) + { + id = g_disk.track[track].sector[f].id; + } + } + + return id; +} + +static int SectorSize(int size) +{ + return 128 << size; +} + +/* ---------------------------------------- HANDLER INTERFACES +*/ +static const char *CPC_last_error(void) +{ + return g_last_error; +} + +static void CPC_list_files(void) +{ +} + +static void CPC_list_info(void) +{ + int f; + + printf("Disk format: "); + + switch(g_format) + { + case FormatIBM: + printf("IBM\n"); + break; + case FormatSystem: + printf("System\n"); + break; + case FormatData: + printf("Data\n"); + break; + case UnknownFormat: + printf("Unknown\n"); + return; + } + + printf("No tracks: %d\n", g_disk.no_tracks); + + for(f = 0; f < g_disk.no_tracks; f++) + { + printf("Track %2d : ", f); + + if (g_disk.track[f].formatted) + { + int n; + + printf(" [ "); + + for(n = 0; n < g_disk.track[f].no_sectors; n++) + { + printf("%2.2x %3.3x ", (unsigned)g_disk.track[f].sector[n].id, + (unsigned)SectorSize + (g_disk.track[f].sector[n].size)); + } + + printf("]\n"); + } + else + { + printf("unformatted\n"); + } + } +} + +static int CPC_is_my_file(const void *buff, size_t buffsize) +{ + return CompareMem(buff, "MV - CPC") == 0 || + CompareMem(buff, "EXTENDED") == 0; +} + +static int CPC_open_image(void *buff, size_t buffsize) +{ + int f,n; + + if (CompareMem(buff, "MV - CPC") == 0) + { + g_is_extended = 0; + } + else if (CompareMem(buff, "EXTENDED") == 0) + { + g_is_extended = 1; + } + else + { + return ImageError("Can't find disk file signature"); + } + + g_mem = buff; + g_size = buffsize; + + memset(&g_disk, 0, sizeof g_disk); + + if (g_is_extended) + { + int no_sides; + int total_track_length = 0; + + no_sides = g_mem[0x31]; + + if (no_sides > 1) + { + return ImageError("Invalid number of sides %d", no_sides); + } + + g_disk.no_tracks = g_mem[0x30]; + + if (g_disk.no_tracks > 80) + { + return ImageError("Invalid number of tracks %d", + g_disk.no_tracks); + } + + for(f = 0; f < g_disk.no_tracks; f++) + { + int offset; + int track_size; + int sector_size; + int data_length; + int total_length = 0; + + track_size = g_mem[0x34 + f] * 256; + offset = 0x100 + total_track_length; + total_track_length += track_size; + + g_disk.track[f].formatted = track_size != 0; + + if (g_disk.track[f].formatted) + { + if (CompareMem(g_mem + offset, "Track-Info")) + { + return ImageError + ("Missing 'Track-Info' at offset %d on track %d", + offset, f); + } + + g_disk.track[f].track_no = g_mem[offset + 0x10]; + g_disk.track[f].side_no = g_mem[offset + 0x11]; + g_disk.track[f].sector_size = g_mem[offset + 0x14]; + g_disk.track[f].gap3_length = g_mem[offset + 0x16]; + g_disk.track[f].filler_byte = g_mem[offset + 0x17]; + g_disk.track[f].no_sectors = g_mem[offset + 0x15]; + + if (g_disk.track[f].no_sectors > 10) + { + return ImageError + ("Invalid number of sectors %d on track %d", + g_disk.track[f].no_sectors, + g_disk.track[f].track_no); + } + + sector_size = 128 << g_disk.track[f].sector_size; + + if (sector_size > 512) + { + return ImageError("Invalid sector size %d", sector_size); + } + + for(n = 0; n < g_disk.track[f].no_sectors; n++) + { + int sec_offset; + + sec_offset = offset + 0x18 + n * 8; + + g_disk.track[f].sector[n].id = g_mem[sec_offset + 0x02]; + g_disk.track[f].sector[n].size = g_mem[sec_offset + 0x03]; + g_disk.track[f].sector[n].reg1 = g_mem[sec_offset + 0x04]; + g_disk.track[f].sector[n].reg2 = g_mem[sec_offset + 0x05]; + + data_length = GetWord(sec_offset + 0x06); + sector_size = SectorSize(g_disk.track[f].sector[n].size); + + if (sector_size > 512 || data_length > 512) + { + return ImageError + ("Invalid sector size %d on track %d, sector %d", + sector_size, f, n); + } + + memcpy(g_disk.track[f].sector[n].data, + g_mem + offset + 0x100 + total_length, + data_length); + + total_length += data_length; + } + } + } + } + else + { + int no_sides; + int track_size; + + no_sides = g_mem[0x31]; + + if (no_sides > 1) + { + return ImageError("Invalid number of sides %d", no_sides); + } + + g_disk.no_tracks = g_mem[0x30]; + + if (g_disk.no_tracks > 80) + { + return ImageError("Invalid number of tracks %d", + g_disk.no_tracks); + } + + track_size = GetWord(0x32); + + for(f = 0; f < g_disk.no_tracks; f++) + { + int offset; + int sector_size; + + offset = 0x100 + f * track_size; + + if (CompareMem(g_mem + offset, "Track-Info")) + { + return ImageError + ("Missing 'Track-Info' at offset %d on track %d", + offset, f); + } + + g_disk.track[f].track_no = g_mem[offset + 0x10]; + g_disk.track[f].side_no = g_mem[offset + 0x11]; + g_disk.track[f].sector_size = g_mem[offset + 0x14]; + g_disk.track[f].gap3_length = g_mem[offset + 0x16]; + g_disk.track[f].filler_byte = g_mem[offset + 0x17]; + g_disk.track[f].no_sectors = g_mem[offset + 0x15]; + g_disk.track[f].formatted = 1; + + if (g_disk.track[f].no_sectors > 10) + { + return ImageError("Invalid number of sectors %d on track %d", + g_disk.track[f].no_sectors, + g_disk.track[f].track_no); + } + + sector_size = SectorSize(g_disk.track[f].sector_size); + + if (sector_size > 512) + { + return ImageError("Invalid sector size %d", sector_size); + } + + for(n = 0; n < g_disk.track[f].no_sectors; n++) + { + int sec_offset; + + sec_offset = offset + 0x18 + n * 8; + + g_disk.track[f].sector[n].id = g_mem[sec_offset + 0x02]; + g_disk.track[f].sector[n].size = g_mem[sec_offset + 0x03]; + g_disk.track[f].sector[n].reg1 = g_mem[sec_offset + 0x04]; + g_disk.track[f].sector[n].reg2 = g_mem[sec_offset + 0x05]; + + sector_size = SectorSize(g_disk.track[f].sector[n].size); + + if (sector_size > 512) + { + return ImageError + ("Invalid sector size %d on track %d, sector %d", + SectorSize(g_disk.track[f].sector[n].size)); + } + + memcpy(g_disk.track[f].sector[n].data, + g_mem + offset + 0x100 + sector_size * n, + sector_size); + } + } + } + + switch(LowSectorID(0)) + { + case 1: + if (g_disk.track[0].no_sectors == 8) + { + g_format = FormatIBM; + } + break; + + case 65: + g_format = FormatSystem; + break; + + case 193: + g_format = FormatData; + break; + + default: + g_format = UnknownFormat; + break; + } + + if (g_format == UnknownFormat) + { + return ImageError("Unknown format"); + } + + return 1; +} + +static int CPC_close_image(const char *name) +{ + if (name) + { + } + + if (g_mem) + { + free(g_mem); + g_mem = NULL; + g_size = 0; + } + + return 0; +} + +static int CPC_get_file(const char *name, const char *path) +{ + strcpy(g_last_error, "Get file not yet done"); + return 0; +} + +static int CPC_put_file(const char *name, const char *path) +{ + strcpy(g_last_error, "Put file not yet done"); + return 0; +} + +static int CPC_delete_file(const char *name) +{ + strcpy(g_last_error, "Delete not yet done"); + return 0; +} + +static int CPC_create(const char *path) +{ + strcpy(g_last_error, "Create not yet done"); + return 0; +} + +/* ---------------------------------------- PUBLIC INTERFACES +*/ +void CPC_Initialise(void) +{ + Handler handler = {0}; + + handler.id = "cpc"; + handler.name = "CPC DSK handler"; + + handler.last_error = CPC_last_error; + handler.list_files = CPC_list_files; + handler.list_info = CPC_list_info; + handler.is_my_file = CPC_is_my_file; + handler.open_image = CPC_open_image; + handler.close_image = CPC_close_image; + handler.get_file = CPC_get_file; + handler.put_file = CPC_put_file; + handler.delete_file = CPC_delete_file; + handler.create = CPC_create; + + DITOOL_Register(&handler); +} + +/* +vim: ai sw=4 ts=8 expandtab +*/ @@ -0,0 +1,35 @@ +/* + + DiskImageTool - Tool for manipulating disk images + + Copyright (C) 2019 Ian Cowburn (ianc@noddybox.co.uk) + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. + + ------------------------------------------------------------------------- + + CPC Disk Image handler + +*/ + +#ifndef DITOOL_CPC_H +#define DITOOL_CPC_H + +void CPC_Initialise(void); + +#endif + +/* +vim: ai sw=4 ts=8 expandtab +*/ diff --git a/ditool.c b/ditool.c new file mode 100644 index 0000000..8254650 --- /dev/null +++ b/ditool.c @@ -0,0 +1,419 @@ +/* + + DiskImageTool - Tool for manipulating disk images + + Copyright (C) 2019 Ian Cowburn (ianc@noddybox.co.uk) + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. + + ------------------------------------------------------------------------- + + Main + +*/ +#include <stdlib.h> +#include <stdio.h> +#include <string.h> + +#include "util.h" +#include "handler.h" +#include "cpc.h" + +/* ---------------------------------------- MACROS +*/ + + +/* ---------------------------------------- VERSION INFO +*/ + +static const char *ditool_version = +"Disk Image Tool Version 1.0 development\n" +"\n" +"This program is distributed in the hope that it will be useful,\n" +"but WITHOUT ANY WARRANTY; without even the implied warranty of\n" +"MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n" +"GNU General Public License (Version 3) for more details.\n" +"\n"; + + +/* ---------------------------------------- TYPES +*/ + +/* ---------------------------------------- GLOBALS +*/ +static int g_no_handlers; +static Handler *g_handler; +static Handler *g_current; +static int g_open = 0; + +/* ---------------------------------------- DISK HANDLER REGISTER +*/ + +static void DITOOL_Initialise(void) +{ + CPC_Initialise(); +} + +void DITOOL_Register(const Handler *handler) +{ + g_no_handlers++; + g_handler = Realloc(g_handler, sizeof *g_handler * g_no_handlers); + g_handler[g_no_handlers - 1] = *handler; +} + +/* ---------------------------------------- COMMAND ROUTINES +*/ +static void Help(void) +{ + printf( +"handlers - List available disk image handlers.\n" +"current <handler> - Set current handler.\n" +"open <file> - Try and open disk image. Changes current handler.\n" +"close [<file>] - Close the current disk image. If the optional name\n" +" name is provided the image is saved to that file.\n" +"create <file> - Create new disk image using current handler.\n" +"ls - List files in disk image.\n" +"info - Get info on the disk image.\n" +"get <name> <file> - Get named file from disk image and store it in file.\n" +"put <name> <file> - Put file into disk image calling it name.\n" +"delete <name> - Delete named file from disk image.\n" +"quit - Quit.\n" +); +} + +static void Current(char * const tok[]) +{ + int f; + int found = 0; + + if (tok[1]) + { + for(f = 0; f < g_no_handlers; f++) + { + if (strcmp(g_handler[f].id, tok[1]) == 0) + { + if (g_open && g_current) + { + g_current->close_image(NULL); + g_open = 0; + } + + g_current = g_handler + f; + found = 1; + printf("Set current handler to %s\n", + g_current->name); + } + } + + if (!found) + { + printf("unknown handler %s\n", tok[1]); + } + } + else + { + printf("Missing argument\n"); + } +} + +static void Handlers(char * const tok[]) +{ + int f; + + for(f = 0; f < g_no_handlers; f++) + { + printf("%s - %s\n", g_handler[f].id, g_handler[f].name); + } +} + +static void Open(char * const tok[]) +{ + if (tok[1]) + { + void *mem; + size_t size; + + mem = Load(tok[1], &size); + + if (mem) + { + int f; + + if (g_open && g_current) + { + g_current->close_image(NULL); + g_open = 0; + } + + g_current = NULL; + + for(f = 0; f < g_no_handlers && !g_current; f++) + { + if (g_handler[f].is_my_file(mem, size)) + { + g_current = g_handler + f; + } + } + + if (g_current) + { + if (g_current->open_image(mem, size)) + { + g_open = 1; + printf("Set current handler to %s\n", + g_current->name); + } + else + { + g_open = 0; + printf("%s\n", g_current->last_error()); + } + } + else + { + free(mem); + printf("No handler for file %s\n", tok[1]); + } + } + else + { + printf("Failed to open %s\n", tok[1]); + } + } + else + { + printf("Missing argument\n"); + } +} + +static void Close(char * const tok[]) +{ + if (g_open && g_current) + { + g_current->close_image(tok[1]); + g_open = 0; + } + else + { + printf("No open image\n"); + } +} + +static void Create(char * const tok[]) +{ + if (tok[1]) + { + if (g_current) + { + if (g_open) + { + g_current->close_image(NULL); + g_open = 0; + } + + if (!g_current->create(tok[1])) + { + printf("%s\n", g_current->last_error()); + } + } + else + { + printf("No current handler\n"); + } + } + else + { + printf("Missing argument\n"); + } +} + +static void Ls(char * const tok[]) +{ + if (g_current && g_open) + { + g_current->list_files(); + } + else + { + printf("No open image\n"); + } +} + +static void Info(char * const tok[]) +{ + if (g_current && g_open) + { + g_current->list_info(); + } + else + { + printf("No open image\n"); + } +} + +static void Get(char * const tok[]) +{ + if (tok[2]) + { + if (g_current && g_open) + { + if (!g_current->get_file(tok[1], tok[2])) + { + printf("%s\n", g_current->last_error()); + } + } + else + { + printf("No open image\n"); + } + } + else + { + printf("Missing arguments\n"); + } +} + +static void Put(char * const tok[]) +{ + if (tok[2]) + { + if (g_current && g_open) + { + if (!g_current->put_file(tok[1], tok[2])) + { + printf("%s\n", g_current->last_error()); + } + } + else + { + printf("No open image\n"); + } + } + else + { + printf("Missing arguments\n"); + } +} + +static void Delete(char * const tok[]) +{ + if (tok[1]) + { + if (g_current && g_open) + { + if (!g_current->delete_file(tok[1])) + { + printf("%s\n", g_current->last_error()); + } + } + else + { + printf("No open image\n"); + } + } + else + { + printf("Missing argument\n"); + } +} + +/* ---------------------------------------- MAIN +*/ +int main(int argc, char *argv[]) +{ + char buff[1024]; + int quit = 0; + + printf("%s", ditool_version); + printf("Type help for help\n"); + + DITOOL_Initialise(); + + while(!quit && GetLine(g_current ? g_current->id : "DITOOL", + buff, sizeof buff)) + { + char *tok[3] = {0}; + + tok[0] = strtok(buff, " \t"); + + if (tok[0]) + { + tok[1] = strtok(NULL, " \t"); + + if (tok[1]) + { + tok[2] = strtok(NULL, " \t"); + } + + if (strcmp(tok[0], "quit") == 0) + { + quit = 1; + } + else if (strcmp(tok[0], "help") == 0 || strcmp(tok[0], "?") == 0) + { + Help(); + } + else if (strcmp(tok[0], "current") == 0) + { + Current(tok); + } + else if (strcmp(tok[0], "handlers") == 0) + { + Handlers(tok); + } + else if (strcmp(tok[0], "open") == 0) + { + Open(tok); + } + else if (strcmp(tok[0], "close") == 0) + { + Close(tok); + } + else if (strcmp(tok[0], "create") == 0) + { + Create(tok); + } + else if (strcmp(tok[0], "ls") == 0) + { + Ls(tok); + } + else if (strcmp(tok[0], "info") == 0) + { + Info(tok); + } + else if (strcmp(tok[0], "get") == 0) + { + Get(tok); + } + else if (strcmp(tok[0], "put") == 0) + { + Put(tok); + } + else if (strcmp(tok[0], "delete") == 0) + { + Delete(tok); + } + else + { + printf("unknown command %s - type help for help\n", tok[0]); + } + } + } + + return EXIT_SUCCESS; +} + +/* +vim: ai sw=4 ts=8 expandtab +*/ diff --git a/handler.h b/handler.h new file mode 100644 index 0000000..9b08d3a --- /dev/null +++ b/handler.h @@ -0,0 +1,95 @@ +/* + + DiskImageTool - Tool for manipulating disk images + + Copyright (C) 2019 Ian Cowburn (ianc@noddybox.co.uk) + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. + + ------------------------------------------------------------------------- + + Disk Image handler definitions + +*/ + +#ifndef DITOOL_HANDLER_H +#define DITOOL_HANDLER_H + +typedef struct +{ + /* The short ID of the image handler + */ + const char *id; + + /* The longer descriptive name for the handler + */ + const char *name; + + /* Returns a reason for the last error. + */ + const char * (*last_error)(void); + + /* List the files in the image to stdout + */ + void (*list_files)(void); + + /* Display info about the disk image to stdout + */ + void (*list_info)(void); + + /* Return TRUE if the passed memory buffer is recognised as your image type + */ + int (*is_my_file)(const void *buff, size_t buffsize); + + /* Open an image. The passed pointer is dynamically allocated and it is + the handlers responsibility to free it once done. It can be assumed + that is_my_file() was successfully called prior to this. Returns TRUE + if the image is opened OK. If the image wasn't opened OK buff should be + freed. + */ + int (*open_image)(void *buff, size_t buffsize); + + /* Close the current image, saving it to the passed name if not NULL. + Returns TRUE if saved OK. The image can be freed at this point. + */ + int (*close_image)(const char *name); + + /* Get a file from the disk image given the name, storing it in the passed + path. Returns TRUE if the file was fetched OK. + */ + int (*get_file)(const char *name, const char *path); + + /* Put the contents of the passed path into the image with the passed name. + Returns TRUE if the file was stored OK. + */ + int (*put_file)(const char *name, const char *path); + + /* Delete the passed name from the disk image. Returns TRUE for success. + */ + int (*delete_file)(const char *name); + + /* Create a new disk image in the supplied path and open it for access in + the handler. + */ + int (*create)(const char *path); + +} Handler; + +void DITOOL_Register(const Handler *handler); + +#endif + +/* +vim: ai sw=4 ts=8 expandtab +*/ @@ -0,0 +1,172 @@ +/* + + DiskImageTool - Tool for manipulating disk images - CPC DSK images + + Copyright (C) 2019 Ian Cowburn (ianc@noddybox.co.uk) + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. + + ------------------------------------------------------------------------- + + Various utilities + +*/ +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include <errno.h> + +#include "util.h" + +/* ---------------------------------------- PRIVATE ROUTINES +*/ +static void Chomp(char *p) +{ + size_t l = strlen(p); + + while(l > 0 && p[l-1] == '\n') + { + p[--l] = 0; + } +} + +/* ---------------------------------------- PUBLIC INTERFACES +*/ + +void *Malloc(size_t size) +{ + void *p; + + p = malloc(size); + + if (!p) + { + perror("malloc"); + exit(EXIT_FAILURE); + } + + return p; +} + +void *Realloc(void *p, size_t size) +{ + void *new; + + new = realloc(p, size); + + if (!new) + { + perror("realloc"); + exit(EXIT_FAILURE); + } + + return new; +} + +int GetLine(const char *prompt, char *buff, size_t buffsize) +{ + buff[0] = 0; + + while(!buff[0]) + { + printf("%s> ", prompt); + fflush(stdout); + + if (!fgets(buff, buffsize, stdin)) + { + return 0; + } + + Chomp(buff); + } + + return 1; +} + +void *Load(const char *path, size_t *size) +{ + FILE *fp; + void *mem = NULL; + + *size = 0; + + if ((fp = fopen(path, "rb"))) + { + fseek(fp, 0, SEEK_END); + *size = ftell(fp); + fseek(fp, 0, SEEK_SET); + mem = Malloc(*size); + fread(mem, 1, *size, fp); + fclose(fp); + } + + return mem; +} + +int Save(const char *path, const void *buff, size_t buffsize) +{ + FILE *fp; + + if ((fp = fopen(path, "wb"))) + { + fwrite(buff, 1, buffsize, fp); + fclose(fp); + } + else + { + return 0; + } + + return 1; +} + +int CompareMem(const void *mem, const char *str) +{ + return memcmp(mem, str, strlen(str)); +} + +char GetOption(const char *prompt, const char *allowed, char default_val) +{ + char buff[80]; + + printf("%s> ", prompt); + fflush(stdout); + + while(fgets(buff, sizeof buff, stdin)) + { + Chomp(buff); + + if (buff[0]) + { + if (strchr(allowed, buff[0])) + { + return buff[0]; + } + } + else + { + if (default_val) + { + return default_val; + } + } + } + + return 0; +} + + +/* +vim: ai sw=4 ts=8 expandtab +*/ @@ -0,0 +1,65 @@ +/* + + DiskImageTool - Tool for manipulating disk images + + Copyright (C) 2019 Ian Cowburn (ianc@noddybox.co.uk) + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. + + ------------------------------------------------------------------------- + + Various utilities + +*/ + +#ifndef DITOOL_UTIL_H +#define DITOOL_UTIL_H + +/* Allocate memory, quitting if it fails +*/ +void *Malloc(size_t size); + +/* Reallocate memory, quitting if it fails +*/ +void *Realloc(void *p, size_t size); + +/* Get the next line from stdin, prompting with prompt. Will only return at + EOF or when a string is entered. Returns TRUE for OK, FALSE for EOF. +*/ +int GetLine(const char *prompt, char *buff, size_t buffsize); + +/* Load the file from path into memory, returning a pointer to an allocated + block for the file. *size holds the size of the file. Returns NULL on + error. +*/ +void *Load(const char *path, size_t *size); + +/* Save the passed memory to the path. Returns TRUE for OK, FALSE for failure. +*/ +int Save(const char *path, const void *buff, size_t buffsize); + +/* Compare a lump of memory with a string. Returns as per memcmp() +*/ +int CompareMem(const void *mem, const char *str); + +/* Gets a character from the user from a list of possible choices with an + optional default value. Returns zero on EOF. +*/ +char GetOption(const char *prompt, const char *allowed, char default_val); + +#endif + +/* +vim: ai sw=4 ts=8 expandtab +*/ |