diff options
Diffstat (limited to 'printf.c')
| -rw-r--r-- | printf.c | 927 |
1 files changed, 0 insertions, 927 deletions
diff --git a/printf.c b/printf.c deleted file mode 100644 index 8fdde41..0000000 --- a/printf.c +++ /dev/null @@ -1,927 +0,0 @@ -/**************************************************************************** - * bfs * - * Copyright (C) 2017-2022 Tavian Barnes <tavianator@tavianator.com> * - * * - * Permission to use, copy, modify, and/or distribute this software for any * - * purpose with or without fee is hereby granted. * - * * - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * - * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * - * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * - * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * - * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * - * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. * - ****************************************************************************/ - -#include "printf.h" -#include "bftw.h" -#include "color.h" -#include "ctx.h" -#include "darray.h" -#include "diag.h" -#include "dir.h" -#include "dstring.h" -#include "expr.h" -#include "mtab.h" -#include "pwcache.h" -#include "stat.h" -#include "util.h" -#include "xtime.h" -#include <assert.h> -#include <errno.h> -#include <grp.h> -#include <pwd.h> -#include <stdbool.h> -#include <stdint.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <time.h> - -/** - * A function implementing a printf directive. - */ -typedef int bfs_printf_fn(CFILE *cfile, const struct bfs_printf *directive, const struct BFTW *ftwbuf); - -/** - * A single printf directive like %f or %#4m. The whole format string is stored - * as a darray of these. - */ -struct bfs_printf { - /** The printing function to invoke. */ - bfs_printf_fn *fn; - /** String data associated with this directive. */ - char *str; - /** The stat field to print. */ - enum bfs_stat_field stat_field; - /** Character data associated with this directive. */ - char c; - /** Some data used by the directive. */ - const void *ptr; -}; - -/** Print some text as-is. */ -static int bfs_printf_literal(CFILE *cfile, const struct bfs_printf *directive, const struct BFTW *ftwbuf) { - size_t len = dstrlen(directive->str); - if (fwrite(directive->str, 1, len, cfile->file) == len) { - return 0; - } else { - return -1; - } -} - -/** \c: flush */ -static int bfs_printf_flush(CFILE *cfile, const struct bfs_printf *directive, const struct BFTW *ftwbuf) { - return fflush(cfile->file); -} - -/** Check if we can safely colorize this directive. */ -static bool should_color(CFILE *cfile, const struct bfs_printf *directive) { - return cfile->colors && strcmp(directive->str, "%s") == 0; -} - -/** - * Print a value to a temporary buffer before formatting it. - */ -#define BFS_PRINTF_BUF(buf, format, ...) \ - char buf[256]; \ - int ret = snprintf(buf, sizeof(buf), format, __VA_ARGS__); \ - assert(ret >= 0 && (size_t)ret < sizeof(buf)); \ - (void)ret - -/** %a, %c, %t: ctime() */ -static int bfs_printf_ctime(CFILE *cfile, const struct bfs_printf *directive, const struct BFTW *ftwbuf) { - // Not using ctime() itself because GNU find adds nanoseconds - static const char *days[] = {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"}; - static const char *months[] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"}; - - const struct bfs_stat *statbuf = bftw_stat(ftwbuf, ftwbuf->stat_flags); - if (!statbuf) { - return -1; - } - - const struct timespec *ts = bfs_stat_time(statbuf, directive->stat_field); - if (!ts) { - return -1; - } - - struct tm tm; - if (xlocaltime(&ts->tv_sec, &tm) != 0) { - return -1; - } - - BFS_PRINTF_BUF(buf, "%s %s %2d %.2d:%.2d:%.2d.%09ld0 %4d", - days[tm.tm_wday], - months[tm.tm_mon], - tm.tm_mday, - tm.tm_hour, - tm.tm_min, - tm.tm_sec, - (long)ts->tv_nsec, - 1900 + tm.tm_year); - - return fprintf(cfile->file, directive->str, buf); -} - -/** %A, %B/%W, %C, %T: strftime() */ -static int bfs_printf_strftime(CFILE *cfile, const struct bfs_printf *directive, const struct BFTW *ftwbuf) { - const struct bfs_stat *statbuf = bftw_stat(ftwbuf, ftwbuf->stat_flags); - if (!statbuf) { - return -1; - } - - const struct timespec *ts = bfs_stat_time(statbuf, directive->stat_field); - if (!ts) { - return -1; - } - - struct tm tm; - if (xlocaltime(&ts->tv_sec, &tm) != 0) { - return -1; - } - - int ret; - char buf[256]; - char format[] = "% "; - switch (directive->c) { - // Non-POSIX strftime() features - case '@': - ret = snprintf(buf, sizeof(buf), "%lld.%09ld0", (long long)ts->tv_sec, (long)ts->tv_nsec); - break; - case '+': - ret = snprintf(buf, sizeof(buf), "%4d-%.2d-%.2d+%.2d:%.2d:%.2d.%09ld0", - 1900 + tm.tm_year, - tm.tm_mon + 1, - tm.tm_mday, - tm.tm_hour, - tm.tm_min, - tm.tm_sec, - (long)ts->tv_nsec); - break; - case 'k': - ret = snprintf(buf, sizeof(buf), "%2d", tm.tm_hour); - break; - case 'l': - ret = snprintf(buf, sizeof(buf), "%2d", (tm.tm_hour + 11)%12 + 1); - break; - case 's': - ret = snprintf(buf, sizeof(buf), "%lld", (long long)ts->tv_sec); - break; - case 'S': - ret = snprintf(buf, sizeof(buf), "%.2d.%09ld0", tm.tm_sec, (long)ts->tv_nsec); - break; - case 'T': - ret = snprintf(buf, sizeof(buf), "%.2d:%.2d:%.2d.%09ld0", - tm.tm_hour, - tm.tm_min, - tm.tm_sec, - (long)ts->tv_nsec); - break; - - // POSIX strftime() features - default: - format[1] = directive->c; - ret = strftime(buf, sizeof(buf), format, &tm); - break; - } - - assert(ret >= 0 && (size_t)ret < sizeof(buf)); - (void)ret; - - return fprintf(cfile->file, directive->str, buf); -} - -/** %b: blocks */ -static int bfs_printf_b(CFILE *cfile, const struct bfs_printf *directive, const struct BFTW *ftwbuf) { - const struct bfs_stat *statbuf = bftw_stat(ftwbuf, ftwbuf->stat_flags); - if (!statbuf) { - return -1; - } - - uintmax_t blocks = ((uintmax_t)statbuf->blocks*BFS_STAT_BLKSIZE + 511)/512; - BFS_PRINTF_BUF(buf, "%ju", blocks); - return fprintf(cfile->file, directive->str, buf); -} - -/** %d: depth */ -static int bfs_printf_d(CFILE *cfile, const struct bfs_printf *directive, const struct BFTW *ftwbuf) { - return fprintf(cfile->file, directive->str, (intmax_t)ftwbuf->depth); -} - -/** %D: device */ -static int bfs_printf_D(CFILE *cfile, const struct bfs_printf *directive, const struct BFTW *ftwbuf) { - const struct bfs_stat *statbuf = bftw_stat(ftwbuf, ftwbuf->stat_flags); - if (!statbuf) { - return -1; - } - - BFS_PRINTF_BUF(buf, "%ju", (uintmax_t)statbuf->dev); - return fprintf(cfile->file, directive->str, buf); -} - -/** %f: file name */ -static int bfs_printf_f(CFILE *cfile, const struct bfs_printf *directive, const struct BFTW *ftwbuf) { - if (should_color(cfile, directive)) { - return cfprintf(cfile, "%pF", ftwbuf); - } else { - return fprintf(cfile->file, directive->str, ftwbuf->path + ftwbuf->nameoff); - } -} - -/** %F: file system type */ -static int bfs_printf_F(CFILE *cfile, const struct bfs_printf *directive, const struct BFTW *ftwbuf) { - const struct bfs_stat *statbuf = bftw_stat(ftwbuf, ftwbuf->stat_flags); - if (!statbuf) { - return -1; - } - - const char *type = bfs_fstype(directive->ptr, statbuf); - return fprintf(cfile->file, directive->str, type); -} - -/** %G: gid */ -static int bfs_printf_G(CFILE *cfile, const struct bfs_printf *directive, const struct BFTW *ftwbuf) { - const struct bfs_stat *statbuf = bftw_stat(ftwbuf, ftwbuf->stat_flags); - if (!statbuf) { - return -1; - } - - BFS_PRINTF_BUF(buf, "%ju", (uintmax_t)statbuf->gid); - return fprintf(cfile->file, directive->str, buf); -} - -/** %g: group name */ -static int bfs_printf_g(CFILE *cfile, const struct bfs_printf *directive, const struct BFTW *ftwbuf) { - const struct bfs_stat *statbuf = bftw_stat(ftwbuf, ftwbuf->stat_flags); - if (!statbuf) { - return -1; - } - - const struct bfs_groups *groups = directive->ptr; - const struct group *grp = groups ? bfs_getgrgid(groups, statbuf->gid) : NULL; - if (!grp) { - return bfs_printf_G(cfile, directive, ftwbuf); - } - - return fprintf(cfile->file, directive->str, grp->gr_name); -} - -/** %h: leading directories */ -static int bfs_printf_h(CFILE *cfile, const struct bfs_printf *directive, const struct BFTW *ftwbuf) { - char *copy = NULL; - const char *buf; - - if (ftwbuf->nameoff > 0) { - size_t len = ftwbuf->nameoff; - if (len > 1) { - --len; - } - - buf = copy = strndup(ftwbuf->path, len); - } else if (ftwbuf->path[0] == '/') { - buf = "/"; - } else { - buf = "."; - } - - if (!buf) { - return -1; - } - - int ret; - if (should_color(cfile, directive)) { - ret = cfprintf(cfile, "${di}%s${rs}", buf); - } else { - ret = fprintf(cfile->file, directive->str, buf); - } - - free(copy); - return ret; -} - -/** %H: current root */ -static int bfs_printf_H(CFILE *cfile, const struct bfs_printf *directive, const struct BFTW *ftwbuf) { - if (should_color(cfile, directive)) { - if (ftwbuf->depth == 0) { - return cfprintf(cfile, "%pP", ftwbuf); - } else { - return cfprintf(cfile, "${di}%s${rs}", ftwbuf->root); - } - } else { - return fprintf(cfile->file, directive->str, ftwbuf->root); - } -} - -/** %i: inode */ -static int bfs_printf_i(CFILE *cfile, const struct bfs_printf *directive, const struct BFTW *ftwbuf) { - const struct bfs_stat *statbuf = bftw_stat(ftwbuf, ftwbuf->stat_flags); - if (!statbuf) { - return -1; - } - - BFS_PRINTF_BUF(buf, "%ju", (uintmax_t)statbuf->ino); - return fprintf(cfile->file, directive->str, buf); -} - -/** %k: 1K blocks */ -static int bfs_printf_k(CFILE *cfile, const struct bfs_printf *directive, const struct BFTW *ftwbuf) { - const struct bfs_stat *statbuf = bftw_stat(ftwbuf, ftwbuf->stat_flags); - if (!statbuf) { - return -1; - } - - uintmax_t blocks = ((uintmax_t)statbuf->blocks*BFS_STAT_BLKSIZE + 1023)/1024; - BFS_PRINTF_BUF(buf, "%ju", blocks); - return fprintf(cfile->file, directive->str, buf); -} - -/** %l: link target */ -static int bfs_printf_l(CFILE *cfile, const struct bfs_printf *directive, const struct BFTW *ftwbuf) { - char *buf = NULL; - const char *target = ""; - - if (ftwbuf->type == BFS_LNK) { - if (should_color(cfile, directive)) { - return cfprintf(cfile, "%pL", ftwbuf); - } - - const struct bfs_stat *statbuf = bftw_cached_stat(ftwbuf, BFS_STAT_NOFOLLOW); - size_t len = statbuf ? statbuf->size : 0; - - target = buf = xreadlinkat(ftwbuf->at_fd, ftwbuf->at_path, len); - if (!target) { - return -1; - } - } - - int ret = fprintf(cfile->file, directive->str, target); - free(buf); - return ret; -} - -/** %m: mode */ -static int bfs_printf_m(CFILE *cfile, const struct bfs_printf *directive, const struct BFTW *ftwbuf) { - const struct bfs_stat *statbuf = bftw_stat(ftwbuf, ftwbuf->stat_flags); - if (!statbuf) { - return -1; - } - - return fprintf(cfile->file, directive->str, (unsigned int)(statbuf->mode & 07777)); -} - -/** %M: symbolic mode */ -static int bfs_printf_M(CFILE *cfile, const struct bfs_printf *directive, const struct BFTW *ftwbuf) { - const struct bfs_stat *statbuf = bftw_stat(ftwbuf, ftwbuf->stat_flags); - if (!statbuf) { - return -1; - } - - char buf[11]; - xstrmode(statbuf->mode, buf); - return fprintf(cfile->file, directive->str, buf); -} - -/** %n: link count */ -static int bfs_printf_n(CFILE *cfile, const struct bfs_printf *directive, const struct BFTW *ftwbuf) { - const struct bfs_stat *statbuf = bftw_stat(ftwbuf, ftwbuf->stat_flags); - if (!statbuf) { - return -1; - } - - BFS_PRINTF_BUF(buf, "%ju", (uintmax_t)statbuf->nlink); - return fprintf(cfile->file, directive->str, buf); -} - -/** %p: full path */ -static int bfs_printf_p(CFILE *cfile, const struct bfs_printf *directive, const struct BFTW *ftwbuf) { - if (should_color(cfile, directive)) { - return cfprintf(cfile, "%pP", ftwbuf); - } else { - return fprintf(cfile->file, directive->str, ftwbuf->path); - } -} - -/** %P: path after root */ -static int bfs_printf_P(CFILE *cfile, const struct bfs_printf *directive, const struct BFTW *ftwbuf) { - size_t offset = strlen(ftwbuf->root); - if (ftwbuf->path[offset] == '/') { - ++offset; - } - - if (should_color(cfile, directive)) { - if (ftwbuf->depth == 0) { - return 0; - } - - struct BFTW copybuf = *ftwbuf; - copybuf.path += offset; - copybuf.nameoff -= offset; - return cfprintf(cfile, "%pP", ©buf); - } else { - return fprintf(cfile->file, directive->str, ftwbuf->path + offset); - } -} - -/** %s: size */ -static int bfs_printf_s(CFILE *cfile, const struct bfs_printf *directive, const struct BFTW *ftwbuf) { - const struct bfs_stat *statbuf = bftw_stat(ftwbuf, ftwbuf->stat_flags); - if (!statbuf) { - return -1; - } - - BFS_PRINTF_BUF(buf, "%ju", (uintmax_t)statbuf->size); - return fprintf(cfile->file, directive->str, buf); -} - -/** %S: sparseness */ -static int bfs_printf_S(CFILE *cfile, const struct bfs_printf *directive, const struct BFTW *ftwbuf) { - const struct bfs_stat *statbuf = bftw_stat(ftwbuf, ftwbuf->stat_flags); - if (!statbuf) { - return -1; - } - - double sparsity; - if (statbuf->size == 0 && statbuf->blocks == 0) { - sparsity = 1.0; - } else { - sparsity = (double)BFS_STAT_BLKSIZE*statbuf->blocks/statbuf->size; - } - return fprintf(cfile->file, directive->str, sparsity); -} - -/** %U: uid */ -static int bfs_printf_U(CFILE *cfile, const struct bfs_printf *directive, const struct BFTW *ftwbuf) { - const struct bfs_stat *statbuf = bftw_stat(ftwbuf, ftwbuf->stat_flags); - if (!statbuf) { - return -1; - } - - BFS_PRINTF_BUF(buf, "%ju", (uintmax_t)statbuf->uid); - return fprintf(cfile->file, directive->str, buf); -} - -/** %u: user name */ -static int bfs_printf_u(CFILE *cfile, const struct bfs_printf *directive, const struct BFTW *ftwbuf) { - const struct bfs_stat *statbuf = bftw_stat(ftwbuf, ftwbuf->stat_flags); - if (!statbuf) { - return -1; - } - - const struct bfs_users *users = directive->ptr; - const struct passwd *pwd = users ? bfs_getpwuid(users, statbuf->uid) : NULL; - if (!pwd) { - return bfs_printf_U(cfile, directive, ftwbuf); - } - - return fprintf(cfile->file, directive->str, pwd->pw_name); -} - -static const char *bfs_printf_type(enum bfs_type type) { - switch (type) { - case BFS_BLK: - return "b"; - case BFS_CHR: - return "c"; - case BFS_DIR: - return "d"; - case BFS_DOOR: - return "D"; - case BFS_FIFO: - return "p"; - case BFS_LNK: - return "l"; - case BFS_REG: - return "f"; - case BFS_SOCK: - return "s"; - default: - return "U"; - } -} - -/** %y: type */ -static int bfs_printf_y(CFILE *cfile, const struct bfs_printf *directive, const struct BFTW *ftwbuf) { - const char *type = bfs_printf_type(ftwbuf->type); - return fprintf(cfile->file, directive->str, type); -} - -/** %Y: target type */ -static int bfs_printf_Y(CFILE *cfile, const struct bfs_printf *directive, const struct BFTW *ftwbuf) { - int error = 0; - - if (ftwbuf->type != BFS_LNK) { - return bfs_printf_y(cfile, directive, ftwbuf); - } - - const char *type = "U"; - - const struct bfs_stat *statbuf = bftw_stat(ftwbuf, BFS_STAT_FOLLOW); - if (statbuf) { - type = bfs_printf_type(bfs_mode_to_type(statbuf->mode)); - } else { - switch (errno) { - case ELOOP: - type = "L"; - break; - case ENOENT: - case ENOTDIR: - type = "N"; - break; - default: - type = "?"; - error = errno; - break; - } - } - - int ret = fprintf(cfile->file, directive->str, type); - if (error != 0) { - ret = -1; - errno = error; - } - return ret; -} - -/** - * Append a literal string to the chain. - */ -static int append_literal(const struct bfs_ctx *ctx, struct bfs_printf **format, char **literal) { - if (dstrlen(*literal) == 0) { - return 0; - } - - struct bfs_printf directive = { - .fn = bfs_printf_literal, - .str = *literal, - }; - - if (DARRAY_PUSH(format, &directive) != 0) { - bfs_perror(ctx, "DARRAY_PUSH()"); - return -1; - } - - *literal = dstralloc(0); - if (!*literal) { - bfs_perror(ctx, "dstralloc()"); - return -1; - } - - return 0; -} - -/** - * Append a printf directive to the chain. - */ -static int append_directive(const struct bfs_ctx *ctx, struct bfs_printf **format, char **literal, struct bfs_printf *directive) { - if (append_literal(ctx, format, literal) != 0) { - return -1; - } - - if (DARRAY_PUSH(format, directive) != 0) { - bfs_perror(ctx, "DARRAY_PUSH()"); - return -1; - } - - return 0; -} - -int bfs_printf_parse(const struct bfs_ctx *ctx, struct bfs_expr *expr, const char *format) { - expr->printf = NULL; - - char *literal = dstralloc(0); - if (!literal) { - bfs_perror(ctx, "dstralloc()"); - goto error; - } - - for (const char *i = format; *i; ++i) { - char c = *i; - - if (c == '\\') { - c = *++i; - - if (c >= '0' && c < '8') { - c = 0; - for (int j = 0; j < 3 && *i >= '0' && *i < '8'; ++i, ++j) { - c *= 8; - c += *i - '0'; - } - --i; - goto one_char; - } - - switch (c) { - case 'a': c = '\a'; break; - case 'b': c = '\b'; break; - case 'f': c = '\f'; break; - case 'n': c = '\n'; break; - case 'r': c = '\r'; break; - case 't': c = '\t'; break; - case 'v': c = '\v'; break; - case '\\': c = '\\'; break; - - case 'c': - { - struct bfs_printf directive = { - .fn = bfs_printf_flush, - }; - if (append_directive(ctx, &expr->printf, &literal, &directive) != 0) { - goto error; - } - goto done; - } - - case '\0': - bfs_expr_error(ctx, expr); - bfs_error(ctx, "Incomplete escape sequence '\\'.\n"); - goto error; - - default: - bfs_expr_error(ctx, expr); - bfs_error(ctx, "Unrecognized escape sequence '\\%c'.\n", c); - goto error; - } - } else if (c == '%') { - if (i[1] == '%') { - c = *++i; - goto one_char; - } - - struct bfs_printf directive = { - .str = dstralloc(2), - }; - if (!directive.str) { - goto directive_error; - } - if (dstrapp(&directive.str, c) != 0) { - bfs_perror(ctx, "dstrapp()"); - goto directive_error; - } - - const char *specifier = "s"; - - // Parse any flags - bool must_be_numeric = false; - while (true) { - c = *++i; - - switch (c) { - case '#': - case '0': - case '+': - must_be_numeric = true; - BFS_FALLTHROUGH; - case ' ': - case '-': - if (strchr(directive.str, c)) { - bfs_expr_error(ctx, expr); - bfs_error(ctx, "Duplicate flag '%c'.\n", c); - goto directive_error; - } - if (dstrapp(&directive.str, c) != 0) { - bfs_perror(ctx, "dstrapp()"); - goto directive_error; - } - continue; - } - - break; - } - - // Parse the field width - while (c >= '0' && c <= '9') { - if (dstrapp(&directive.str, c) != 0) { - bfs_perror(ctx, "dstrapp()"); - goto directive_error; - } - c = *++i; - } - - // Parse the precision - if (c == '.') { - do { - if (dstrapp(&directive.str, c) != 0) { - bfs_perror(ctx, "dstrapp()"); - goto directive_error; - } - c = *++i; - } while (c >= '0' && c <= '9'); - } - - switch (c) { - case 'a': - directive.fn = bfs_printf_ctime; - directive.stat_field = BFS_STAT_ATIME; - break; - case 'b': - directive.fn = bfs_printf_b; - break; - case 'c': - directive.fn = bfs_printf_ctime; - directive.stat_field = BFS_STAT_CTIME; - break; - case 'd': - directive.fn = bfs_printf_d; - specifier = "jd"; - break; - case 'D': - directive.fn = bfs_printf_D; - break; - case 'f': - directive.fn = bfs_printf_f; - break; - case 'F': - directive.ptr = bfs_ctx_mtab(ctx); - if (!directive.ptr) { - int error = errno; - bfs_expr_error(ctx, expr); - bfs_error(ctx, "Couldn't parse the mount table: %s.\n", strerror(error)); - goto directive_error; - } - directive.fn = bfs_printf_F; - break; - case 'g': - directive.ptr = bfs_ctx_groups(ctx); - if (!directive.ptr) { - int error = errno; - bfs_expr_error(ctx, expr); - bfs_error(ctx, "Couldn't parse the group table: %s.\n", strerror(error)); - goto directive_error; - } - directive.fn = bfs_printf_g; - break; - case 'G': - directive.fn = bfs_printf_G; - break; - case 'h': - directive.fn = bfs_printf_h; - break; - case 'H': - directive.fn = bfs_printf_H; - break; - case 'i': - directive.fn = bfs_printf_i; - break; - case 'k': - directive.fn = bfs_printf_k; - break; - case 'l': - directive.fn = bfs_printf_l; - break; - case 'm': - directive.fn = bfs_printf_m; - specifier = "o"; - break; - case 'M': - directive.fn = bfs_printf_M; - break; - case 'n': - directive.fn = bfs_printf_n; - break; - case 'p': - directive.fn = bfs_printf_p; - break; - case 'P': - directive.fn = bfs_printf_P; - break; - case 's': - directive.fn = bfs_printf_s; - break; - case 'S': - directive.fn = bfs_printf_S; - specifier = "g"; - break; - case 't': - directive.fn = bfs_printf_ctime; - directive.stat_field = BFS_STAT_MTIME; - break; - case 'u': - directive.ptr = bfs_ctx_users(ctx); - if (!directive.ptr) { - int error = errno; - bfs_expr_error(ctx, expr); - bfs_error(ctx, "Couldn't parse the user table: %s.\n", strerror(error)); - goto directive_error; - } - directive.fn = bfs_printf_u; - break; - case 'U': - directive.fn = bfs_printf_U; - break; - case 'w': - directive.fn = bfs_printf_ctime; - directive.stat_field = BFS_STAT_BTIME; - break; - case 'y': - directive.fn = bfs_printf_y; - break; - case 'Y': - directive.fn = bfs_printf_Y; - break; - - case 'A': - directive.stat_field = BFS_STAT_ATIME; - goto directive_strftime; - case 'B': - case 'W': - directive.stat_field = BFS_STAT_BTIME; - goto directive_strftime; - case 'C': - directive.stat_field = BFS_STAT_CTIME; - goto directive_strftime; - case 'T': - directive.stat_field = BFS_STAT_MTIME; - goto directive_strftime; - - directive_strftime: - directive.fn = bfs_printf_strftime; - c = *++i; - if (!c) { - bfs_expr_error(ctx, expr); - bfs_error(ctx, "Incomplete time specifier '%s%c'.\n", directive.str, i[-1]); - goto directive_error; - } else if (strchr("%+@aAbBcCdDeFgGhHIjklmMnprRsStTuUVwWxXyYzZ", c)) { - directive.c = c; - } else { - bfs_expr_error(ctx, expr); - bfs_error(ctx, "Unrecognized time specifier '%%%c%c'.\n", i[-1], c); - goto directive_error; - } - break; - - case '\0': - bfs_expr_error(ctx, expr); - bfs_error(ctx, "Incomplete format specifier '%s'.\n", directive.str); - goto directive_error; - - default: - bfs_expr_error(ctx, expr); - bfs_error(ctx, "Unrecognized format specifier '%%%c'.\n", c); - goto directive_error; - } - - if (must_be_numeric && strcmp(specifier, "s") == 0) { - bfs_expr_error(ctx, expr); - bfs_error(ctx, "Invalid flags '%s' for string format '%%%c'.\n", directive.str + 1, c); - goto directive_error; - } - - if (dstrcat(&directive.str, specifier) != 0) { - bfs_perror(ctx, "dstrcat()"); - goto directive_error; - } - - if (append_directive(ctx, &expr->printf, &literal, &directive) != 0) { - goto directive_error; - } - - continue; - - directive_error: - dstrfree(directive.str); - goto error; - } - - one_char: - if (dstrapp(&literal, c) != 0) { - bfs_perror(ctx, "dstrapp()"); - goto error; - } - } - -done: - if (append_literal(ctx, &expr->printf, &literal) != 0) { - goto error; - } - dstrfree(literal); - return 0; - -error: - dstrfree(literal); - bfs_printf_free(expr->printf); - expr->printf = NULL; - return -1; -} - -int bfs_printf(CFILE *cfile, const struct bfs_printf *format, const struct BFTW *ftwbuf) { - int ret = 0, error = 0; - - for (size_t i = 0; i < darray_length(format); ++i) { - const struct bfs_printf *directive = &format[i]; - if (directive->fn(cfile, directive, ftwbuf) < 0) { - ret = -1; - error = errno; - } - } - - errno = error; - return ret; -} - -void bfs_printf_free(struct bfs_printf *format) { - for (size_t i = 0; i < darray_length(format); ++i) { - dstrfree(format[i].str); - } - darray_free(format); -} |