emil/bake
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update to -x, proper, with debug

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Emil Williams 2024-04-06 23:36:07 +00:00
parent bf4f5ac788
commit be4ed76d84
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GPG Key ID: CEEBC9208C287297
1 changed files with 158 additions and 56 deletions
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bake.c
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@ -3,7 +3,7 @@
* *
* Licensed under the GNU Public License version 3 only, see LICENSE. * Licensed under the GNU Public License version 3 only, see LICENSE.
* *
* @BAKE cc -std=c89 -O2 @FILENAME -o ${@SHORT} @ARGS # ${other-file} @STOP * @BAKE cc -std=c89 -O2 @FILENAME -o @SHORT @ARGS @STOP
*/ */
#define _POSIX_C_SOURCE 200809L #define _POSIX_C_SOURCE 200809L
@ -32,20 +32,33 @@
#define EXPUNGE_START "${" #define EXPUNGE_START "${"
#define EXPUNGE_STOP "}" #define EXPUNGE_STOP "}"
#define VERSION "20240302" #define VERSION "20240404"
#define HELP \ #define HELP \
BOLD "[option] target-file" RESET " [" GREEN "arguments" RESET " ...]\n" \ BOLD "[option] target-file" RESET " [" GREEN "arguments" RESET " ...]\n" \
"Use the format `" BOLD "@BAKE" RESET " cmd ...' within the target-file, this will execute the\n" \ "Use the format `" BOLD "@BAKE" RESET " cmd ...' within the target-file, this will execute the\n" \
"rest of line, or if found within the file, until the " BOLD "@STOP" RESET " marker.\n" \ "rest of line, or if found within the file, until the " BOLD "@STOP" RESET " marker.\n" \
#define DESC \ #define DESC \
"Options [Must always be first]\n" \ "Options [Must always be first]\n" \
"\t" DIM "-h --help" RESET", " BOLD "-n --dry-run\n" RESET \ "\t" DIM "-h --help" RESET", " BOLD "-n --dry-run" RESET ", " BOLD "-x --expunge\n" RESET \
"Expansions\n" \ "Expansions\n" \
"\t" YELLOW "@FILENAME" RESET " returns target-file (abc.x.txt)\n" \ "\t" YELLOW "@FILENAME" RESET " returns target-file (abc.x.txt)\n" \
"\t" YELLOW "@SHORT " RESET " returns target-file without suffix (^-> abc.x)\n" \ "\t" YELLOW "@SHORT " RESET " returns target-file without suffix (^-> abc.x)\n" \
"\t" YELLOW "@ARGS " RESET " returns " GREEN "arguments" RESET "\n" "\t" YELLOW "@ARGS " RESET " returns " GREEN "arguments" RESET "\n" \
"Additional Features And Notes\n" \
"\t" YELLOW "@{" RESET BOLD "EXPUNGE_THIS_FILE" YELLOW "}" RESET \
" inline region to delete this or many files or directories,\n" \
"\tnon-recursive, only one file per block, removed from left to right. This has no\n" \
"\tinfluence on the normal command execution.\n" \
"\t" YELLOW "\\" RESET \
"SPECIAL_NAME will result in SPECIAL_NAME in the executed shell command.\n" \
"\t" RED "\\\\" RESET \
"SPECIAL NAME will result as the rule above.\n" \
"\tThis is applicable to all meaningful symbols in Bake, it is ignored otherwise."
#define COPYRIGHT "2023 Emil Williams"
#define LICENSE "Licensed under the GNU Public License version 3 only, see LICENSE."
#define FILENAME_LIMIT (FILENAME_MAX) #define FILENAME_LIMIT (FILENAME_MAX)
@ -147,28 +160,37 @@ find(char * buf, char * x, char * end) {
return NULL; return NULL;
} }
#if 0
static string_t static string_t
get_region(string_t m, char * findstart, char * findstop) { find_region(char * buf, char * findstart, char * findstop,
string_t ret = { NULL, 0 }; char ** end) {
char * end = m.len + m.buf; char * start = find(buf, findstart, *end),
ret.buf = find(m.buf, findstart, end); * stop;
size_t findstart_len = strlen(findstart);
if (ret.buf) { if (!start) {
char * stop = ret.buf + strlen(findstart); return (string_t) {
stop = find(stop, findstop, end); NULL, 0
};
if (stop) {
ret.len = stop - ret.buf;
} else {
ret.buf = NULL;
}
} }
return ret; stop = find(start + findstart_len, findstop, *end);
if (!stop) {
return (string_t) {
NULL, 0
};
}
*end = stop;
return (string_t) {
start, stop - start
};
} }
#endif
static char * static char *
find_region(string_t m, char * findstart, char * findstop) { get_region(string_t m, char * findstart, char * findstop) {
char * buf = NULL, * start, * stop, * end = m.len + m.buf; char * buf = NULL, * start, * stop, * end = m.len + m.buf;
start = find(m.buf, findstart, end); start = find(m.buf, findstart, end);
@ -199,19 +221,19 @@ find_region(string_t m, char * findstart, char * findstop) {
} }
} }
buf = strndup(start, (size_t) (stop - m.buf) - (start - m.buf)); buf = strndup(start, (size_t)(stop - start));
} }
return buf; return buf;
} }
static char * static char *
file_find_region(char * fn, char * start, char * stop) { file_get_region(char * fn, char * start, char * stop) {
char * buf = NULL; char * buf = NULL;
map_t m = map(fn); map_t m = map(fn);
if (m.buf) { if (m.buf) {
buf = find_region(m, start, stop); buf = get_region(m, start, stop);
munmap(m.buf, m.len); munmap(m.buf, m.len);
} }
@ -355,31 +377,92 @@ bake_expand(char * buf, char * filename, int argc, char ** argv) {
return buf; return buf;
} }
#if 0
/* this function somehow rapes the end of the string and removes one character or it's a off by one in strip */
static string_t * static string_t *
remove_expand(char * buf) { remove_expand(char * buf) {
string_t * rem = NULL; string_t * rem = malloc(sizeof(string_t));
char * start = buf, * bend = start + strlen(buf), * end = bend;
size_t i = 0; size_t i = 0;
size_t f;
rem = (string_t *) realloc(rem, i + 1 * sizeof(string_t));
while (rem) { while (rem) {
fflush(stdout); rem[i] = find_region(start, EXPUNGE_START, EXPUNGE_STOP, &end);
rem[i] = get_region((string_t) { printf("\nrem:%d %s\n", rem[i].len, rem[i]);
buf, strlen(buf)
}, EXPUNGE_START, EXPUNGE_STOP);
if (rem[i].buf) { if (rem[i].buf) {
expand(rem[i].buf, EXPUNGE_START, ""); start += rem[i].buf - buf + end - rem[i].buf;
expand(rem[i].buf, EXPUNGE_STOP, ""); rem[i].len = end - rem[i].buf - strlen(EXPUNGE_START);
} else break; printf("\nrem:%d %s\n", rem[i].len, start);
insert(start, "", bend - start, 0, 1);
} else {
break;
}
++i; rem = realloc(rem, (1 + ++i) * sizeof(string_t));
rem = (string_t *) realloc(rem, (1 + i) * sizeof(string_t));
} }
expand(buf, EXPUNGE_START, "");
return rem; return rem;
} }
#endif
static char *
remove_expand(char * buf) {
size_t i, f, plen = 0, len = 1, end = strlen(buf);
char * l = NULL;
/* "a\0b\0\0" */
/* ${a} \${} ${b} -> insert at beginning of } shift 1 -> */
/* ${a \${} ${b -> expand -> a ${} b */
for (i = 0; i < end; ++i) {
if (!strncmp(buf + i, EXPUNGE_START, strlen(EXPUNGE_START))) {
if (buf + i > buf && buf[i - 1] == '\\') {
continue;
}
for (f = i; f < end; ++f) {
if (!strncmp(buf + f, EXPUNGE_STOP, strlen(EXPUNGE_STOP))) {
if (buf + f > buf && buf[f - 1] == '\\') {
continue;
}
insert(buf + f, "", end - f, 0, 1);
i += strlen(EXPUNGE_START);
plen = (len != 1) * (len - 1);
len += f - i + 1;
printf("plen: %d, len: %d\n", plen, len);
l = realloc(l, len);
memcpy(l + plen, buf + i, f - i);
l[plen + f - i] = '\0';
goto next;
}
}
goto stop;
}
next:
}
stop:
expand(buf, EXPUNGE_START, "");
if (l) {
size_t i, xz = 0;
l[len - 1] = '\0';
for (i = 0; i < len; ++i) {
if (l[i] == '\0') ++xz;
};
printf("xz: %d\n", xz);
printf("l: %s\n", l);
}
return l;
}
/*** strip, run ***/ /*** strip, run ***/
@ -417,15 +500,15 @@ run(char * buf, char * argv0) {
execl("/bin/sh", "sh", "-c", buf, NULL); execl("/bin/sh", "sh", "-c", buf, NULL);
return 0; /* execl overwrites the process anyways */ return 0; /* execl overwrites the process anyways */
} else if (pid == -1) { } else if (pid == -1) {
fprintf(stderr, BOLD RED "%s" RESET ": %s, %s\n", argv0, "Fork Error", fprintf(stderr, BOLD RED "%s" RESET ": %s, %s\n",
strerror(errno)); argv0, "Fork Error", strerror(errno));
return BAKE_ERROR; return BAKE_ERROR;
} else { } else {
int status; int status;
if (waitpid(pid, &status, 0) < 0) { if (waitpid(pid, &status, 0) < 0) {
fprintf(stderr, BOLD RED "%s" RESET ": %s, %s\n", argv0, "Wait PID Error", fprintf(stderr, BOLD RED "%s" RESET ": %s, %s\n",
strerror(errno)); argv0, "Wait PID Error", strerror(errno));
return BAKE_ERROR; return BAKE_ERROR;
} }
@ -446,10 +529,14 @@ main(int argc, char ** argv) {
char * buf = NULL, char * buf = NULL,
* filename, * filename,
* argv0; * argv0;
string_t * rem; char * rem;
argv0 = argv[0]; argv0 = argv[0];
if (argc < 2) {
goto help;
}
while (++argv, --argc && argv[0][0] == '-') { while (++argv, --argc && argv[0][0] == '-') {
++argv[0]; ++argv[0];
@ -500,13 +587,15 @@ main(int argc, char ** argv) {
++argv, --argc; ++argv, --argc;
if (strlen(filename) > FILENAME_LIMIT) { if (strlen(filename) > FILENAME_LIMIT) {
fprintf(stderr, BOLD RED "%s" RESET ": Filename too long (exceeds %d)\n", argv0, fprintf(stderr, BOLD RED "%s" RESET
": Filename too long (exceeds %d)\n",
argv0,
FILENAME_LIMIT); FILENAME_LIMIT);
return BAKE_ERROR; return BAKE_ERROR;
} }
root(&filename); root(&filename);
buf = file_find_region(filename, START, STOP); buf = file_get_region(filename, START, STOP);
char * error[2]; char * error[2];
error[0] = "File Unrecognized"; error[0] = "File Unrecognized";
@ -533,14 +622,24 @@ main(int argc, char ** argv) {
printf(BOLD RED "result" RESET ": " BOLD "%d\n" RESET, ret); printf(BOLD RED "result" RESET ": " BOLD "%d\n" RESET, ret);
} }
} else if (ret & RET_EXPUNGE) { } else if (ret & RET_EXPUNGE) {
if (ret & RET_NORUN) { if (rem) {
puts("NORUN"); char * s = rem;
} else {
size_t i; while (*s) {
for (i = 0; rem[i].buf; ++i) { printf("%s: %sremoving '%s'\n", argv0, ret & RET_NORUN ? "not " : "", s);
printf("removing: %s\n", rem[i].buf);
remove(rem[i].buf); if (!(ret & RET_NORUN)) {
remove(s);
}
s += strlen(s) + 1;
} }
ret = 0;
}
if (ret & RET_NORUN) {
ret = 0;
} }
} }
@ -548,9 +647,12 @@ main(int argc, char ** argv) {
free(buf); free(buf);
return ret; return ret;
help: help:
fprintf(stderr, YELLOW "%s" RESET ": %s", argv0, HELP DESC); fprintf(stderr, YELLOW "%s" RESET ": %s\n", argv0, HELP DESC);
return BAKE_ERROR; return BAKE_ERROR;
version: version:
fprintf(stderr, YELLOW "%s" RESET ": v%s\n", argv0, VERSION); fprintf(stderr,
YELLOW "%s" RESET ": v" VERSION "\n"
"Copyright " COPYRIGHT "\n" LICENSE "\n",
argv0);
return BAKE_ERROR; return BAKE_ERROR;
} }