/*
- * Another dependences for Makefile fast mashine generator
+ * Another fast dependencies generator for Makefiles, Version 2.0
*
* Copyright (C) 2005 by Vladimir Oleynik <dzo@simtreas.ru>
*
- * This programm do
+ * This program does:
* 1) find #define KEY VALUE or #undef KEY from include/config.h
* 2) save include/config/key*.h if changed after previous usage
- * 3) recursive scan from "./" *.[ch] files, but skip scan include/config/...
+ * 3) recursive scan from "./" *.[ch] files, but skips scan of include/config/
* 4) find #include "*.h" and KEYs using, if not as #define and #undef
- * 5) generate depend to stdout
+ * 5) generate dependencies to stdout
* path/file.o: include/config/key*.h found_include_*.h
* path/inc.h: include/config/key*.h found_included_include_*.h
- * This programm do not generate dependences for #include <...>
- *
- * Options:
- * -I local_include_path (include`s paths, default: LOCAL_INCLUDE_PATH)
- * -d (don`t generate depend)
- * -w (show warning if include files not found)
- * -k include/config (default: INCLUDE_CONFIG_PATH)
- * -c include/config.h (configs, default: INCLUDE_CONFIG_KEYS_PATH)
- * dirs_for_scan (default ".")
-*/
+ * This programm does not generate dependencies for #include <...>
+ */
#define LOCAL_INCLUDE_PATH "include"
#define INCLUDE_CONFIG_PATH LOCAL_INCLUDE_PATH"/config"
#define INCLUDE_CONFIG_KEYS_PATH LOCAL_INCLUDE_PATH"/config.h"
+#define bb_mkdep_full_options \
+"\nOptions:" \
+"\n\t-I local_include_path include paths, default: \"" LOCAL_INCLUDE_PATH "\"" \
+"\n\t-d don't generate depend" \
+"\n\t-w show warning if include files not found" \
+"\n\t-k include/config default: \"" INCLUDE_CONFIG_PATH "\"" \
+"\n\t-c include/config.h configs, default: \"" INCLUDE_CONFIG_KEYS_PATH "\"" \
+"\n\tdirs_to_scan default \".\""
+
+#define bb_mkdep_terse_options "Usage: [-I local_include_paths] [-dw] " \
+ "[-k path_for_stored_keys] [dirs]"
+
+
+
#define _GNU_SOURCE
#include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
#include <fcntl.h>
+
typedef struct BB_KEYS {
char *keyname;
const char *value;
struct BB_KEYS *next;
} bb_key_t;
-typedef struct FILE_LIST {
- char *name;
- char *ext; /* *.c or *.h, point to last char */
- long size;
-} file_list_t;
+static bb_key_t *check_key(bb_key_t *k, const char *nk);
+static bb_key_t *make_new_key(bb_key_t *k, const char *nk);
-/* partial and simplify libbb routine */
+/* partial and simplified libbb routine */
static void bb_error_d(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2)));
static char * bb_asprint(const char *format, ...) __attribute__ ((format (printf, 1, 2)));
char *data;
struct llist_s *link;
} llist_t;
-static llist_t *llist_add_to(llist_t *old_head, char *new_item);
static void *xrealloc(void *p, size_t size);
static void *xmalloc(size_t size);
static char *bb_xstrdup(const char *s);
static char *bb_simplify_path(const char *path);
+/* error messages */
+static const char msg_enomem[] = "memory exhausted";
-/* for lexical analyzier */
+/* for lexical analyser */
static bb_key_t *key_top;
static llist_t *configs;
+static int mode;
+#define CONFIG_MODE 0
+#define SOURCES_MODE 1
+
static void parse_inc(const char *include, const char *fname);
static void parse_conf_opt(char *opt, const char *val, size_t rsz);
-/* for speed triks */
+/* for speed tricks */
static char first_chars[257]; /* + L_EOF */
+/* trick for fast find "define", "include", "undef" */
+static char first_chars_diu[256];
static int pagesizem1;
static size_t mema_id = 128; /* first allocated for id */
static char *id_s;
-static bb_key_t *check_key(bb_key_t *k, const char *nk);
-static bb_key_t *make_new_key(bb_key_t *k, const char *nk);
+
#define yy_error_d(s) bb_error_d("%s:%d hmm, %s", fname, line, s)
#define REM '/' /* block comment */
#define BS '\\' /* back slash */
#define POUND '#' /* # */
-#define I 'i' /* #include preprocessor`s directive */
-#define D 'd' /* #define preprocessor`s directive */
-#define U 'u' /* #undef preprocessor`s directive */
+#define I 'i' /* #include preprocessor's directive */
+#define D 'd' /* #define preprocessor's directive */
+#define U 'u' /* #undef preprocessor's directive */
#define LI 'I' /* #include "... */
#define DK 'K' /* #define KEY... (config mode) */
#define DV 'V' /* #define KEY "VALUE or #define KEY 'VALUE */
id = xrealloc(id, local_mema_id += 16); \
id[id_len++] = c; } while(0)
-/* stupid C lexical analizator */
+
+
+/* stupid C lexical analyser */
static void c_lex(const char *fname, long fsize)
{
int c = L_EOF; /* stupid initialize */
char *map;
int mapsize;
+ if(fsize == 0) {
+ fprintf(stderr, "Warning: %s is empty\n", fname);
+ return;
+ }
fd = open(fname, O_RDONLY);
if(fd < 0) {
perror(fname);
for(;;) {
/* <STR,CHR>\n|<<EOF>> */
if(c == '\n' || c == L_EOF)
- yy_error_d("unterminating");
+ yy_error_d("unterminated");
if(c == BS) {
/* <STR,CHR>\\ */
getc1();
/* <#.*>/ */
getc1();
if(c == REM)
- yy_error_d("detect // in preprocessor line");
+ yy_error_d("detected // in preprocessor line");
if(c == '*') {
/* <#.*>[/][*] */
called = state;
yy_error_d("strange preprocessor line");
}
if(state == POUND) {
- if(c != 'd' && c != 'u' && c != 'i') {
- while(ISALNUM(c))
- getc1();
- state = S;
- } else {
- static const char * const preproc[] = {
- "define", "undef", "include", ""
- };
- const char * const *str_type;
+ const unsigned char *p = optr - 1;
+ /* tricks */
+ static const char * const preproc[] = {
+ /* 0-4 */
+ "", "", "", "", "",
+ /* 5 */ /* 6 */ /* 7 */
+ "undef", "define", "include",
+ };
+ size_t readed = 0;
+ size_t diu = first_chars_diu[c]; /* strlen and preproc ptr */
- id_len = 0;
- do { put_id(c); getc1(); } while(ISALNUM(c));
- put_id(0);
- for(str_type = preproc; (state = **str_type); str_type++) {
- if(*id == state && strcmp(id, *str_type) == 0)
- break;
- }
- /* to S if another #directive */
+ while(ISALNUM(c)) {
+ readed++;
+ getc1();
+ }
+ /* have str begined with c, readed == strlen key and compared */
+ if(diu != S && diu == readed && !memcmp(p, preproc[diu], diu)) {
+ state = *p;
id_len = 0; /* common for save */
+ } else {
+ state = S;
}
ungetc1();
continue;
continue;
}
if(state == D || state == U) {
- if(configs == NULL) {
+ if(mode == SOURCES_MODE) {
/* ignore depend with #define or #undef KEY */
while(ISALNUM(c))
getc1();
getc1();
}
if(!id_len)
- yy_error_d("expected identificator");
+ yy_error_d("expected identifier");
put_id(0);
if(state == U) {
parse_conf_opt(id, NULL, (optr - start));
static void show_usage(void) __attribute__ ((noreturn));
static void show_usage(void)
{
- bb_error_d("Usage: [-I local_include_paths] [-dw] "
- "[-k path_for_store_keys] [-s skip_file] [dirs]");
+ bb_error_d("%s\n%s\n", bb_mkdep_terse_options, bb_mkdep_full_options);
}
static const char *kp;
nk_size = strlen(nk) + 1;
cur = xmalloc(sizeof(bb_key_t) + nk_size);
cur->keyname = memcpy(cur + 1, nk, nk_size);
- cur->checked = 1;
+ cur->checked = 0;
cur->next = k;
return cur;
}
static inline char *store_include_fullpath(char *p_i, bb_key_t *li)
{
- struct stat st;
char *ok;
- if(stat(p_i, &st) == 0) {
+ if(access(p_i, F_OK) == 0) {
ok = li->stored_path = bb_simplify_path(p_i);
+ li->checked = 1;
} else {
ok = NULL;
}
p_i = bb_asprint("%.*s/%s", w, p, include);
if(store_include_fullpath(p_i, li))
return;
- }
- for(lo = Iop; lo; lo = lo->link) {
- p_i = bb_asprint("%s/%s", lo->data, include);
- if(store_include_fullpath(p_i, li))
+ for(lo = Iop; lo; lo = lo->link) {
+ p_i = bb_asprint("%s/%s", lo->data, include);
+ if(store_include_fullpath(p_i, li))
+ return;
+ }
+ } else {
+ /* absolute include pathname */
+ if(access(include, F_OK) == 0) {
+ li->stored_path = bb_xstrdup(include);
+ li->checked = 1;
return;
+ }
}
li->stored_path = NULL;
if(noiwarning)
static void parse_conf_opt(char *opt, const char *val, size_t recordsz)
{
bb_key_t *cur;
+ char *s, *p;
+ struct stat st;
+ int fd;
+ int cmp_ok = 0;
+ static char *record_buf;
+ static char *r_cmp;
+ static size_t r_sz;
+ ssize_t rw_ret;
cur = check_key(key_top, opt);
- if(cur == NULL) {
- /* new key, check old key if present after previous usage */
- char *s, *p;
- struct stat st;
- int fd;
- int cmp_ok = 0;
- static char *record_buf;
- static char *r_cmp;
- static size_t r_sz;
- ssize_t rw_ret;
-
- cur = make_new_key(key_top, opt);
-
- recordsz += 2; /* \n\0 */
- if(recordsz > r_sz) {
- record_buf = xrealloc(record_buf, r_sz=recordsz);
- r_cmp = xrealloc(r_cmp, recordsz);
- }
- s = record_buf;
- /* may be short count " " */
- if(val) {
- if(*val == '\0') {
- cur->value = "";
- recordsz = sprintf(s, "#define %s\n", opt);
- } else {
- cur->value = bb_xstrdup(val);
- recordsz = sprintf(s, "#define %s %s\n", opt, val);
- }
+ if(cur != NULL) {
+ /* present already */
+ cur->checked = 0; /* store only */
+ if(cur->value == NULL && val == NULL)
+ return;
+ if(cur->value != NULL && val != NULL && strcmp(cur->value, val) == 0)
+ return;
+ fprintf(stderr, "Warning: redefined %s\n", opt);
+ }
+ /* new or redefined key, check old key if present after previous usage */
+ key_top = cur = make_new_key(key_top, opt);
+
+ recordsz += 2; /* \n\0 */
+ if(recordsz > r_sz) {
+ record_buf = xrealloc(record_buf, r_sz=recordsz);
+ r_cmp = xrealloc(r_cmp, recordsz);
+ }
+ s = record_buf;
+ /* may be short count " " */
+ if(val) {
+ if(*val == '\0') {
+ cur->value = "";
+ recordsz = sprintf(s, "#define %s\n", opt);
} else {
- cur->value = NULL;
- recordsz = sprintf(s, "#undef %s\n", opt);
- }
- /* size_t -> ssize_t :( */
- rw_ret = (ssize_t)recordsz;
- /* trick, save first char KEY for do fast identify id */
- first_chars[(int)*opt] = *opt;
-
- /* key converting [A-Z_] -> [a-z/] */
- for(p = opt; *p; p++) {
- if(*p >= 'A' && *p <= 'Z')
- *p = *p - 'A' + 'a';
- else if(*p == '_')
- *p = '/';
+ cur->value = bb_xstrdup(val);
+ recordsz = sprintf(s, "#define %s %s\n", opt, val);
}
- p = bb_asprint("%s/%s.h", kp, opt);
- cur->stored_path = opt = p;
- if(stat(opt, &st)) {
- p += kp_len;
- while(*++p) {
- /* Auto-create directories. */
- if (*p == '/') {
- *p = '\0';
- if (stat(opt, &st) != 0 && mkdir(opt, 0755) != 0)
- bb_error_d("mkdir(%s): %m", opt);
- *p = '/';
- }
+ } else {
+ cur->value = NULL;
+ recordsz = sprintf(s, "#undef %s\n", opt);
+ }
+ /* size_t -> ssize_t :( */
+ rw_ret = (ssize_t)recordsz;
+ /* trick, save first char KEY for do fast identify id */
+ first_chars[(int)*opt] = *opt;
+
+ /* key converting [A-Z_] -> [a-z/] */
+ for(p = opt; *p; p++) {
+ if(*p >= 'A' && *p <= 'Z')
+ *p = *p - 'A' + 'a';
+ else if(*p == '_')
+ *p = '/';
+ }
+ p = bb_asprint("%s/%s.h", kp, opt);
+ cur->stored_path = opt = p;
+ if(stat(opt, &st)) {
+ p += kp_len;
+ while(*++p) {
+ /* Auto-create directories. */
+ if (*p == '/') {
+ *p = '\0';
+ if (access(opt, F_OK) != 0 && mkdir(opt, 0755) != 0)
+ bb_error_d("mkdir(%s): %m", opt);
+ *p = '/';
}
- } else {
- /* found */
- if(st.st_size == (off_t)recordsz) {
- fd = open(opt, O_RDONLY);
- if(fd < 0 || read(fd, r_cmp, recordsz) < rw_ret)
- bb_error_d("%s: %m", opt);
- close(fd);
- cmp_ok = memcmp(s, r_cmp, recordsz) == 0;
- }
- }
- if(!cmp_ok) {
- fd = open(opt, O_WRONLY|O_CREAT|O_TRUNC, 0644);
- if(fd < 0 || write(fd, s, recordsz) < rw_ret)
- bb_error_d("%s: %m", opt);
- close(fd);
}
- key_top = cur;
} else {
- /* present already */
- if((cur->value == NULL && val != NULL) ||
- (cur->value != NULL && val == NULL) ||
- (cur->value != NULL && val != NULL && strcmp(cur->value, val)))
- fprintf(stderr, "Warning: redefined %s\n", opt);
+ /* found */
+ if(st.st_size == (off_t)recordsz) {
+ fd = open(opt, O_RDONLY);
+ if(fd < 0 || read(fd, r_cmp, recordsz) < rw_ret)
+ bb_error_d("%s: %m", opt);
+ close(fd);
+ cmp_ok = memcmp(s, r_cmp, recordsz) == 0;
+ }
+ }
+ if(!cmp_ok) {
+ fd = open(opt, O_WRONLY|O_CREAT|O_TRUNC, 0644);
+ if(fd < 0 || write(fd, s, recordsz) < rw_ret)
+ bb_error_d("%s: %m", opt);
+ close(fd);
}
- /* store only */
- cur->checked = 0;
}
static int show_dep(int first, bb_key_t *k, const char *name)
return first;
}
-static llist_t *files;
static struct stat st_kp;
-
-static char *dir_and_entry;
+static int dontgenerate_dep;
static char *
-filter_chd(const char *fe, const char *p, size_t dirlen)
+parse_chd(const char *fe, const char *p, size_t dirlen)
{
struct stat st;
char *fp;
- char *afp;
- llist_t *cfl;
- file_list_t *f;
size_t df_sz;
+ static char *dir_and_entry;
static size_t dir_and_entry_sz;
if (*fe == '.')
return NULL;
}
if(S_ISREG(st.st_mode)) {
- afp = fp + df_sz - 3;
- if(*afp++ != '.' || (*afp != 'c' && *afp != 'h')) {
+ llist_t *cfl;
+ char *e = fp + df_sz - 3;
+
+ if(*e++ != '.' || (*e != 'c' && *e != 'h')) {
/* direntry is regular file, but is not *.[ch] */
return NULL;
}
- if (st.st_size == 0) {
- fprintf(stderr, "Warning: %s is empty\n", fp);
- return NULL;
- }
- } else {
- if(S_ISDIR(st.st_mode)) {
- if (st.st_dev == st_kp.st_dev && st.st_ino == st_kp.st_ino) {
- /* drop scan kp/ directory */
+ for(cfl = configs; cfl; cfl = cfl->link) {
+ struct stat *config = (struct stat *)cfl->data;
+
+ if (st.st_dev == config->st_dev && st.st_ino == config->st_ino) {
+ /* skip already parsed configs.h */
return NULL;
}
- /* buff is returned, begin of zero allocate */
- dir_and_entry = NULL;
- dir_and_entry_sz = 0;
- return fp;
}
- /* hmm, is device! */
- return NULL;
- }
- afp = bb_simplify_path(fp);
- for(cfl = configs; cfl; cfl = cfl->link) {
- if(cfl->data && strcmp(cfl->data, afp) == 0) {
- /* parse configs.h */
- free(afp);
- c_lex(fp, st.st_size);
- free(cfl->data);
- cfl->data = NULL;
- return NULL;
+ /* direntry is *.[ch] regular file and is not configs */
+ if(!dontgenerate_dep) {
+ int first;
+
+ c_lex(fp, st.st_size);
+ fp = bb_simplify_path(fp);
+ if(*e == 'c') {
+ /* *.c -> *.o */
+ e = strrchr(fp, '.') + 1;
+ *e = 'o';
+ }
+ first = show_dep(1, Ifound, fp);
+ first = show_dep(first, key_top, fp);
+ if(first == 0)
+ putchar('\n');
+ free(fp);
}
+ return NULL;
+ } else if(S_ISDIR(st.st_mode)) {
+ if (st.st_dev == st_kp.st_dev && st.st_ino == st_kp.st_ino)
+ return NULL; /* drop scan kp/ directory */
+ /* direntry is directory. buff is returned, begin of zero allocate */
+ dir_and_entry = NULL;
+ dir_and_entry_sz = 0;
+ return fp;
}
- /* direntry is *.[ch] regular file */
- f = xmalloc(sizeof(file_list_t));
- f->name = afp;
- f->ext = strrchr(afp, '.') + 1;
- f->size = st.st_size;
- files = llist_add_to(files, (char *)f);
+ /* hmm, direntry is device! */
return NULL;
}
+/* from libbb but inline for fast */
+static inline llist_t *llist_add_to(llist_t *old_head, char *new_item)
+{
+ llist_t *new_head;
+
+ new_head = xmalloc(sizeof(llist_t));
+ new_head->data = new_item;
+ new_head->link = old_head;
+
+ return(new_head);
+}
+
static void scan_dir_find_ch_files(char *p)
{
llist_t *dirs;
fprintf(stderr, "Warning: opendir(%s): %m", dirs->data);
dirlen = strlen(dirs->data);
while ((de = readdir(dir)) != NULL) {
- char *found_dir = filter_chd(de->d_name, dirs->data, dirlen);
+ char *found_dir = parse_chd(de->d_name, dirs->data, dirlen);
if(found_dir)
d_add = llist_add_to(d_add, found_dir);
int main(int argc, char **argv)
{
- int generate_dep = 1;
char *s;
int i;
llist_t *fl;
while (getcwd (s, path_max) == NULL) {
if(errno != ERANGE)
bb_error_d("getcwd: %m");
- path_max += PATH_INCR;
- s = xrealloc (s, path_max);
+ s = xrealloc (s, path_max += PATH_INCR);
}
pwd = s;
}
configs = llist_add_to(configs, s);
break;
case 'd':
- generate_dep = 0;
+ dontgenerate_dep = 1;
break;
case 'k':
if(kp)
show_usage();
}
}
- /* defaults */
+ /* default kp */
if(kp == NULL)
kp = bb_simplify_path(INCLUDE_CONFIG_PATH);
+ /* globals initialize */
+ kp_len = strlen(kp);
+ if(stat(kp, &st_kp))
+ bb_error_d("stat(%s): %m", kp);
+ if(!S_ISDIR(st_kp.st_mode))
+ bb_error_d("%s is not directory", kp);
+ /* defaults */
if(Iop == NULL)
Iop = llist_add_to(Iop, LOCAL_INCLUDE_PATH);
if(configs == NULL) {
s = bb_simplify_path(INCLUDE_CONFIG_KEYS_PATH);
configs = llist_add_to(configs, s);
}
- /* globals initialize */
/* for c_lex */
pagesizem1 = getpagesize() - 1;
id_s = xmalloc(mema_id);
first_chars[i] = ANY;
}
first_chars[i] = '-'; /* L_EOF */
+ /* trick for fast find "define", "include", "undef" */
+ first_chars_diu[(int)'d'] = (char)6; /* strlen("define"); */
+ first_chars_diu[(int)'i'] = (char)7; /* strlen("include"); */
+ first_chars_diu[(int)'u'] = (char)5; /* strlen("undef"); */
- kp_len = strlen(kp);
- if(stat(kp, &st_kp))
- bb_error_d("stat(%s): %m", kp);
- if(!S_ISDIR(st_kp.st_mode))
- bb_error_d("%s is not directory", kp);
+ /* parse configs */
+ for(fl = configs; fl; fl = fl->link) {
+ struct stat st;
+
+ if(stat(fl->data, &st))
+ bb_error_d("stat(%s): %m", fl->data);
+ c_lex(fl->data, st.st_size);
+ /* trick for fast comparing found files with configs */
+ fl->data = xrealloc(fl->data, sizeof(struct stat));
+ memcpy(fl->data, &st, sizeof(struct stat));
+ }
- /* main loops */
+ /* main loop */
+ mode = SOURCES_MODE;
argv += optind;
if(*argv) {
while(*argv)
} else {
scan_dir_find_ch_files(".");
}
-
- for(fl = configs; fl; fl = fl->link) {
- if(fl->data) {
- /* configs.h placed outsize of scanned dirs or not "*.ch" */
- struct stat st;
-
- if(stat(fl->data, &st))
- bb_error_d("stat(%s): %m", fl->data);
- c_lex(fl->data, st.st_size);
- free(fl->data);
- }
- }
- free(configs);
- configs = NULL; /* flag read config --> parse sourses mode */
-
- for(fl = files; fl; fl = fl->link) {
- file_list_t *t = (file_list_t *)(fl->data);
- c_lex(t->name, t->size);
- if(generate_dep) {
- if(t->ext[0] == 'c') {
- /* *.c -> *.o */
- t->ext[0] = 'o';
- }
- i = show_dep(1, Ifound, t->name);
- i = show_dep(i, key_top, t->name);
- if(i == 0)
- putchar('\n');
- }
- }
return 0;
}
-/* partial and simplify libbb routine */
+/* partial and simplified libbb routine */
static void bb_error_d(const char *s, ...)
{
va_list p;
exit(1);
}
-
-static void *xmalloc(size_t size)
-{
- void *p = malloc(size);
-
- if(p == NULL)
- bb_error_d("memory exhausted");
- return p;
-}
-
-static void *xrealloc(void *p, size_t size) {
- p = realloc(p, size);
- if(p == NULL)
- bb_error_d("memory exhausted");
- return p;
-}
-
static char *bb_asprint(const char *format, ...)
{
va_list p;
return out;
}
-static llist_t *llist_add_to(llist_t *old_head, char *new_item)
+/* partial libbb routine as is */
+static void *xmalloc(size_t size)
{
- llist_t *new_head;
+ void *p = malloc(size);
- new_head = xmalloc(sizeof(llist_t));
- new_head->data = new_item;
- new_head->link = old_head;
+ if(p == NULL)
+ bb_error_d(msg_enomem);
+ return p;
+}
- return(new_head);
+static void *xrealloc(void *p, size_t size) {
+ p = realloc(p, size);
+ if(p == NULL)
+ bb_error_d(msg_enomem);
+ return p;
}
static char *bb_xstrdup(const char *s)
char *r = strdup(s);
if(r == NULL)
- bb_error_d("memory exhausted");
+ bb_error_d(msg_enomem);
return r;
}
projects / platform / upstream / busybox.git / commitdiff