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push broken path split code

This commit is contained in:
'mr software' 2023-10-29 02:05:53 -07:00
parent 5c0d3da6f2
commit 04be31476c
1 changed files with 34 additions and 13 deletions
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45
tool/mfstool.c
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@ -10,8 +10,6 @@
#define setbit(x, y) x[y >> 3] |= 1 << (y & 7)
#define NUM_MULTICALL 1
typedef struct {
char* name;
int (*fn)(int, char**);
@ -37,25 +35,44 @@ char** psplit(char* path, int* i) {
if(path[strlen(path) - 1] == '/') dir = 1;
while(1) {
while(x) {
while(*path == '/') path++;
if(!*path) break;
l = pstrlen(path, &x);
if(l < 3 && *path == '.') {
if(path[1] == '.' && *i != 0) free(rpth[*i--]);
} else {
rpth[*i] = memcpy(malloc(l + 1), path, l);
if(*path == '.' && l < 3) {
// nop - will not handle case l == 0 or l == 1
if(l == 2) {
if(path[1] == '.') {
if(*i != !!strcmp(rpth[0], "/")) {
printf("..: free rpth[%i]\n", *i);
free(memcpy(rpth[--(*i)], "\0", 1)); // will not overwrite first element if it is "/" or index oob
} else if(strcmp(rpth[0], "/")) {
int acc = 0;
for(int z = 0; z < *i; z++) {
acc += !!strcmp(rpth[z], "..");
printf("check rpth[%i]:\t%s\n", z, rpth[z]);
}
printf("acc = %i\n", acc);
if(!acc) goto addent;
}
} else goto addent;
}
} else { // insert string
addent: rpth[*i] = memcpy(malloc(l + 1), path, l);
rpth[(*i)++][l] = 0;
path += l + x; // prevent buffer overrun
}
if(!x) break;
path += l + x; // prevent buffer overrun
if(*i >= a) rpth = realloc(rpth, sizeof(char*)*(a += 4));
}
printf("end psplit\n\n");
if(dir) {
if(*i + 1 >= a) rpth = realloc(rpth, sizeof(char*)*(a += 4));
rpth[(*i)++] = memcpy(malloc(2), "/", 2);
}
// TODO free a-*i elements from end to avoid leak
return rpth;
}
@ -214,18 +231,22 @@ int mfs_insert(int argc, char** argv) {
if(argc < 3) return !!printf("need arguments: [mothfs file] [file to insert]\n");
}
#define NUM_MULTICALL 2
multicall mc[NUM_MULTICALL] = {
{"new", mfs_new},
// {"insert", mfs_insert},
{"insert", mfs_insert},
};
int main(int argc, char** argv) {
int y;
char** x = psplit("//doc/toc////foc//", &y);
//char** x = psplit("/pl/../././../p2/p3/..//", &y);
//char** x = psplit("/p2/", &y);
//char** x = psplit("../../p2///", &y);
char** x = psplit("pl/../../././../p2/p3/..//", &y);
printf("%i\n", y);
for(int i = 0; i < y; i++) printf("%s\n", x[i]);
for(int i = 0; i < y; i++) printf("%i:\t%s\n", i, x[i]);
if(argc < 2) err: {
printf("valid functions:");