diff options
Diffstat (limited to 'lib/diag.c')
-rw-r--r-- | lib/diag.c | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/lib/diag.c b/lib/diag.c new file mode 100644 index 0000000..d061e9e --- /dev/null +++ b/lib/diag.c @@ -0,0 +1,181 @@ +/* This file is part of Eclat. + Copyright (C) 2012 Sergey Poznyakoff. + + Eclat 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, or (at your option) + any later version. + + Eclat 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 Eclat. If not, see <http://www.gnu.org/licenses/>. */ + +#include "libeclat.h" +#include <string.h> +#include <sysexits.h> + +const char *program_name; +struct debug_category debug_category[LIBECLAT_DBG_MAX]; +int debug_avail; + +void +set_program_name(const char *arg) +{ + program_name = strrchr(arg, '/'); + if (!program_name) + program_name = arg; + else + program_name++; +} + +void +vdiag(grecs_locus_t const *locus, const char *qual, const char *fmt, + va_list ap) +{ + if (program_name) + fprintf(stderr, "%s: ", program_name); + + if (locus) { + size_t size = 0; + + if (locus->beg.col == 0) + fprintf(stderr, "%s:%u", + locus->beg.file, + locus->beg.line); + else if (strcmp(locus->beg.file, locus->end.file)) + fprintf(stderr, "%s:%u.%u-%s:%u.%u", + locus->beg.file, + locus->beg.line, locus->beg.col, + locus->end.file, + locus->end.line, locus->end.col); + else if (locus->beg.line != locus->end.line) + fprintf(stderr, "%s:%u.%u-%u.%u", + locus->beg.file, + locus->beg.line, locus->beg.col, + locus->end.line, locus->end.col); + else + fprintf(stderr, "%s:%u.%u-%u", + locus->beg.file, + locus->beg.line, locus->beg.col, + locus->end.col); + fprintf(stderr, ": "); + } + + if (qual) + fprintf(stderr, "%s: ", qual); + vfprintf(stderr, fmt, ap); + fputc('\n', stderr); +} + +void +diag(grecs_locus_t const *locus, const char *qual, const char *fmt, ...) +{ + va_list ap; + + va_start(ap, fmt); + vdiag(locus, qual, fmt, ap); + va_end(ap); +} + +void +die(int status, const char *fmt, ...) +{ + va_list ap; + + va_start(ap, fmt); + vdiag(NULL, NULL, fmt, ap); + va_end(ap); + exit(status); +} + +void +err(const char *fmt, ...) +{ + va_list ap; + + va_start(ap, fmt); + vdiag(NULL, NULL, fmt, ap); + va_end(ap); +} + +void +warn(const char *fmt, ...) +{ + va_list ap; + + va_start(ap, fmt); + vdiag(NULL, "warning", fmt, ap); + va_end(ap); +} + +void +debug_printf(const char *fmt, ...) +{ + va_list ap; + + va_start(ap, fmt); + vdiag(NULL, "debug", fmt, ap); + va_end(ap); +} + +static struct debug_category * +find_category(const char *arg, size_t len) +{ + struct debug_category *dp; + + for (dp = debug_category; dp < debug_category + debug_avail; dp++) + if (dp->length == len && memcmp(dp->name, arg, len) == 0) + return dp; + return NULL; +} + +int +parse_debug_level(const char *arg) +{ + unsigned long lev; + char *p; + size_t len = strcspn(arg, "."); + struct debug_category *dp; + + if (arg[len] == 0) { + lev = strtoul(arg, &p, 10); + if (*p) + return -1; + for (dp = debug_category; dp < debug_category + debug_avail; + dp++) + dp->level = lev; + return 0; + } + + dp = find_category(arg, len); + if (!dp) + return -1; + + p = (char*) arg + len; + if (*p == 0) + lev = 100; + else if (*p != '.') + return -1; + else { + lev = strtoul(p + 1, &p, 10); + if (*p) + return -1; + } + dp->level = lev; + return 0; +} + +int +debug_register(char *name) +{ + if (debug_avail >= LIBECLAT_DBG_MAX) + die(EX_SOFTWARE, "no more debug slots available"); + debug_category[debug_avail].name = grecs_strdup(name); + debug_category[debug_avail].length = strlen(name); + debug_category[debug_avail].level = 0; + return debug_avail++; +} |