X-Git-Url: http://git.indexdata.com/?a=blobdiff_plain;f=bfile%2Fmfile.c;h=988523111e30c1d49ffc8b8fa0f30da85475b5c8;hb=ac2780bc12c8c2fce4c5e2bfe4c4dbb58616b8e2;hp=7d81a98eeb785b5788c94cd3c169212e3d5aa6cb;hpb=fe8a4ac0e92103284e9888f0c13c141f4711d9a3;p=idzebra-moved-to-github.git diff --git a/bfile/mfile.c b/bfile/mfile.c index 7d81a98..9885231 100644 --- a/bfile/mfile.c +++ b/bfile/mfile.c @@ -1,10 +1,41 @@ /* - * Copyright (C) 1994, Index Data I/S + * Copyright (C) 1994-1997, Index Data I/S * All rights reserved. * Sebastian Hammer, Adam Dickmeiss * * $Log: mfile.c,v $ - * Revision 1.16 1995-12-12 15:57:57 adam + * Revision 1.26 1997-10-27 14:25:38 adam + * Fixed memory leaks. + * + * Revision 1.25 1997/09/18 08:59:16 adam + * Extra generic handle for the character mapping routines. + * + * Revision 1.24 1997/09/17 12:19:06 adam + * Zebra version corresponds to YAZ version 1.4. + * Changed Zebra server so that it doesn't depend on global common_resource. + * + * Revision 1.23 1997/09/09 13:37:53 adam + * Partial port to WIN95/NT. + * + * Revision 1.22 1997/09/04 13:56:39 adam + * Added O_BINARY to open calls. + * + * Revision 1.21 1996/10/29 13:56:18 adam + * Include of zebrautl.h instead of alexutil.h. + * + * Revision 1.20 1996/05/14 12:10:16 quinn + * Bad areadef scan + * + * Revision 1.19 1996/05/01 07:16:30 quinn + * Fixed ancient bug. + * + * Revision 1.18 1996/04/09 06:47:30 adam + * Function scan_areadef doesn't use sscanf (%n fails on this Linux). + * + * Revision 1.17 1996/03/20 13:29:11 quinn + * Bug-fix + * + * Revision 1.16 1995/12/12 15:57:57 adam * Implemented mf_unlink. cf_unlink uses mf_unlink. * * Revision 1.15 1995/12/08 16:21:14 adam @@ -62,59 +93,93 @@ #include #include +#ifdef WINDOWS +#include +#else #include -#include +#endif +#include +#include #include #include #include #include -#include +#include #include -static MFile_area_struct *open_areas = 0; -static MFile_area_struct *default_area = 0; - -static int scan_areadef(MFile_area ma, const char *name) +static int scan_areadef(MFile_area ma, const char *name, const char *ad) { /* * If no definition is given, use current directory, unlimited. */ - const char *ad = res_get_def(common_resource, name, ".:-1b"); - int offset = 0, rs, size, multi, rd; - char dirname[FILENAME_MAX+1], unit; + char dirname[FILENAME_MAX+1]; mf_dir **dp = &ma->dirs, *dir = *dp; if (!ad) - { - logf (LOG_FATAL, "Could not find resource '%s'", name); - return -1; - } + ad = ".:-1b"; for (;;) { - rs = sscanf(ad + offset, "%[^:]:%d%c %n", dirname, &size, &unit, &rd); - if (rs <= 1) - break; - if (rs != 3) + const char *ad0 = ad; + int i = 0, fact = 1, multi, size = 0; + + while (*ad == ' ' || *ad == '\t') + ad++; + if (!*ad) + break; + while (*ad && *ad != ':') { - logf (LOG_FATAL, "Illegal directory description: %s", ad + offset); - return -1; - } - switch (unit) + if (i < FILENAME_MAX) + dirname[i++] = *ad; + ad++; + } + dirname[i] = '\0'; + if (*ad++ != ':') + { + logf (LOG_FATAL, "Missing colon after path: %s", ad0); + return -1; + } + if (i == 0) + { + logf (LOG_FATAL, "Empty path: %s", ad0); + return -1; + } + while (*ad == ' ' || *ad == '\t') + ad++; + if (*ad == '-') + { + fact = -1; + ad++; + } + else if (*ad == '+') + ad++; + size = 0; + if (*ad < '0' || *ad > '9') + { + logf (LOG_FATAL, "Missing size after path: %s", ad0); + return -1; + } + size = 0; + while (*ad >= '0' && *ad <= '9') + size = size*10 + (*ad++ - '0'); + switch (*ad) { case 'B': case 'b': multi = 1; break; case 'K': case 'k': multi = 1024; break; case 'M': case 'm': multi = 1048576; break; + case '\0': + logf (LOG_FATAL, "Missing unit: %s", ad0); + return -1; default: - logf (LOG_FATAL, "Illegal unit: %c in %s", unit, ad + offset); + logf (LOG_FATAL, "Illegal unit: %c in %s", *ad, ad0); return -1; } + ad++; *dp = dir = xmalloc(sizeof(mf_dir)); dir->next = 0; strcpy(dir->name, dirname); - dir->max_bytes = dir->avail_bytes = size * multi; + dir->max_bytes = dir->avail_bytes = fact * size * multi; dp = &dir->next; - offset += rd; } return 0; } @@ -127,7 +192,7 @@ static int file_position(MFile mf, int pos, int offset) (c < mf->no_files -1 && pos > mf->files[c].top)) { c = 0; - while (mf->files[c].top >= 0 && mf->files[c].top < pos) + while (c + 1 < mf->no_files && mf->files[c].top < pos) { off += mf->files[c].blocks; c++; @@ -137,7 +202,7 @@ static int file_position(MFile mf, int pos, int offset) else off = c ? (mf->files[c-1].top + 1) : 0; if (mf->files[c].fd < 0 && (mf->files[c].fd = open(mf->files[c].path, - mf->wr ? O_RDWR|O_CREAT : O_RDONLY, 0666)) < 0) + mf->wr ? (O_BINARY|O_RDWR|O_CREAT) : (O_BINARY|O_RDONLY), 0666)) < 0) { if (!mf->wr && errno == ENOENT && off == 0) return -2; @@ -163,9 +228,9 @@ static int cmp_part_file(const void *p1, const void *p2) * Create a new area, cotaining metafiles in directories. * Find the part-files in each directory, and inventory the existing metafiles. */ -MFile_area mf_init(const char *name) +MFile_area mf_init(const char *name, const char *spec) { - MFile_area ma = xmalloc(sizeof(MFile_area_struct)), mp; + MFile_area ma = xmalloc(sizeof(*ma)); mf_dir *dirp; meta_file *meta_f; part_file *part_f = 0; @@ -173,18 +238,12 @@ MFile_area mf_init(const char *name) struct dirent *dent; int fd, number; char metaname[FILENAME_MAX+1], tmpnam[FILENAME_MAX+1]; - + logf (LOG_DEBUG, "mf_init(%s)", name); - for (mp = open_areas; mp; mp = mp->next) - if (!strcmp(name, mp->name)) - return mp; - ma = xmalloc(sizeof(MFile_area_struct)); strcpy(ma->name, name); - ma->next = open_areas; - open_areas = ma; ma->mfiles = 0; ma->dirs = 0; - if (scan_areadef(ma, name) < 0) + if (scan_areadef(ma, name, spec) < 0) { logf (LOG_FATAL, "Failed to access description of '%s'", name); return 0; @@ -235,7 +294,7 @@ MFile_area mf_init(const char *name) sprintf(tmpnam, "%s/%s", dirp->name, dent->d_name); part_f->path = xstrdup(tmpnam); /* get size */ - if ((fd = open(part_f->path, O_RDONLY)) < 0) + if ((fd = open(part_f->path, O_BINARY|O_RDONLY)) < 0) { logf (LOG_FATAL|LOG_ERRNO, "Failed to access %s", dent->d_name); @@ -263,84 +322,109 @@ MFile_area mf_init(const char *name) return ma; } +void mf_destroy(MFile_area ma) +{ + mf_dir *dp; + meta_file *meta_f; + + if (!ma) + return; + dp = ma->dirs; + while (dp) + { + mf_dir *d = dp; + dp = dp->next; + xfree (d); + } + meta_f = ma->mfiles; + while (meta_f) + { + int i; + meta_file *m = meta_f; + + for (i = 0; ino_files; i++) + { + xfree (m->files[i].path); + } + meta_f = meta_f->next; + xfree (m); + } + xfree (ma); +} + /* * Open a metafile. * If !ma, Use MF_DEFAULT_AREA. */ MFile mf_open(MFile_area ma, const char *name, int block_size, int wflag) { - struct meta_file *new; + struct meta_file *mnew; int i; char tmp[FILENAME_MAX+1]; mf_dir *dp; logf(LOG_DEBUG, "mf_open(%s bs=%d, %s)", name, block_size, wflag ? "RW" : "RDONLY"); - if (!ma) - { - if (!default_area && !(default_area = mf_init(MF_DEFAULT_AREA))) - { - logf (LOG_FATAL, "Failed to open default area."); - return 0; - } - ma = default_area; - } - for (new = ma->mfiles; new; new = new->next) - if (!strcmp(name, new->name)) - if (new->open) + assert (ma); + for (mnew = ma->mfiles; mnew; mnew = mnew->next) + if (!strcmp(name, mnew->name)) + if (mnew->open) abort(); else break; - if (!new) + if (!mnew) { - new = xmalloc(sizeof(*new)); - strcpy(new->name, name); + mnew = xmalloc(sizeof(*mnew)); + strcpy(mnew->name, name); /* allocate one, empty file */ - new->no_files = 1; - new->files[0].bytes = new->files[0].blocks = 0; - new->files[0].top = -1; - new->files[0].number = 0; - new->files[0].fd = -1; - new->min_bytes_creat = MF_MIN_BLOCKS_CREAT * block_size; + mnew->no_files = 1; + mnew->files[0].bytes = mnew->files[0].blocks = 0; + mnew->files[0].top = -1; + mnew->files[0].number = 0; + mnew->files[0].fd = -1; + mnew->min_bytes_creat = MF_MIN_BLOCKS_CREAT * block_size; for (dp = ma->dirs; dp && dp->max_bytes >= 0 && dp->avail_bytes < - new->min_bytes_creat; dp = dp->next); + mnew->min_bytes_creat; dp = dp->next); if (!dp) { logf (LOG_FATAL, "Insufficient space for new mfile."); return 0; } - new->files[0].dir = dp; - sprintf(tmp, "%s/%s.mf.%d", dp->name, new->name, 0); - new->files[0].path = xstrdup(tmp); - new->ma = ma; + mnew->files[0].dir = dp; + sprintf(tmp, "%s/%s.mf.%d", dp->name, mnew->name, 0); + mnew->files[0].path = xstrdup(tmp); + mnew->ma = ma; + mnew->next = ma->mfiles; + ma->mfiles = mnew; } else { - for (i = 0; i < new->no_files; i++) + for (i = 0; i < mnew->no_files; i++) { - if (new->files[i].bytes % block_size) - new->files[i].bytes += block_size - new->files[i].bytes % + if (mnew->files[i].bytes % block_size) + mnew->files[i].bytes += block_size - mnew->files[i].bytes % block_size; - new->files[i].blocks = new->files[i].bytes / block_size; + mnew->files[i].blocks = mnew->files[i].bytes / block_size; } - assert(!new->open); + assert(!mnew->open); } - new->blocksize = block_size; - new->min_bytes_creat = MF_MIN_BLOCKS_CREAT * block_size; - new->wr=wflag; - new->cur_file = 0; - new->open = 1; + mnew->blocksize = block_size; + mnew->min_bytes_creat = MF_MIN_BLOCKS_CREAT * block_size; + mnew->wr=wflag; + mnew->cur_file = 0; + mnew->open = 1; - for (i = 0; i < new->no_files; i++) + for (i = 0; i < mnew->no_files; i++) { - new->files[i].blocks = new->files[i].bytes / new->blocksize; - if (i == new->no_files) - new->files[i].top = -1; + mnew->files[i].blocks = mnew->files[i].bytes / mnew->blocksize; + if (i == mnew->no_files - 1) + mnew->files[i].top = -1; else - new->files[i].top = i ? (new->files[i-1].top + new->files[i].blocks) - : (new->files[i].blocks - 1); + mnew->files[i].top = + i ? (mnew->files[i-1].top + mnew->files[i].blocks) + : (mnew->files[i].blocks - 1); } - return new; + return mnew; } /* @@ -402,7 +486,6 @@ int mf_write(MFile mf, int no, int offset, int num, const void *buf) /* file needs to grow */ while (ps >= mf->files[mf->cur_file].blocks) { - logf (LOG_DEBUG, "File grows"); /* file overflow - allocate new file */ if (mf->files[mf->cur_file].dir->max_bytes >= 0 && (ps - mf->files[mf->cur_file].blocks + 1) * mf->blocksize >