WhereIs.cpp

//@AUTOHEADER@BEGIN@
/***********************************************************************\
|                    Drift Standard Libraries v1.01                     |
|            Copyright 2010-2023 Drift Solutions / Indy Sams            |
| Docs and more information available at https://www.driftsolutions.dev |
|          This file released under the 3-clause BSD license,           |
|            see included DSL.LICENSE.TXT file for details.             |
\***********************************************************************/
//@AUTOHEADER@END@
 
#include <drift/dslcore.h>
#include <drift/WhereIs.h>
#include <drift/Directory.h>
#include <drift/GenLib.h>
 
void WhereIs_Search(WHEREIS_RESULTS * ret, const char * sDir, const char * fn) {
    char buf[MAX_PATH],buf2[MAX_PATH];
    memset(&buf, 0, sizeof(buf));
    memset(&buf2, 0, sizeof(buf2));
    bool is_dir = false;
    Directory dir(sDir);
    while (dir.Read(buf, sizeof(buf), &is_dir)) {
        if (!is_dir) {
            if (wildicmp(fn, buf)) {
                sprintf(buf2, "%s%s", sDir, buf);
                ret->sResults[ret->nCount] = dsl_strdup(buf2);
                ret->nCount++;
            }
        }
    }
}
 
WHEREIS_RESULTS * DSL_CC WhereIs(const char * fn) {
    WHEREIS_RESULTS * ret = (WHEREIS_RESULTS *)dsl_malloc(sizeof(WHEREIS_RESULTS));
    memset(ret, 0, sizeof(WHEREIS_RESULTS));
    char dir[MAX_PATH];
    memset(&dir, 0, sizeof(dir));
    if (getcwd(dir, sizeof(dir))) {
        if (dir[strlen(dir) - 1] != PATH_SEP) {
            strcat(dir, PATH_SEPS);
        }
        WhereIs_Search(ret, dir, fn);
    }
#ifdef WIN32
    if (SHGetSpecialFolderPathA(NULL, dir, CSIDL_SYSTEM, FALSE)) {
        if (dir[strlen(dir) - 1] != PATH_SEP) {
            strcat(dir, PATH_SEPS);
        }
        WhereIs_Search(ret, dir, fn);
    }
    if (SHGetSpecialFolderPathA(NULL, dir, CSIDL_WINDOWS, FALSE)) {
        if (dir[strlen(dir) - 1] != PATH_SEP) {
            strcat(dir, PATH_SEPS);
        }
        WhereIs_Search(ret, dir, fn);
    }
#else
    #if defined(__x86_64__)
    WhereIs_Search(ret, "/usr/lib64/", fn);
    WhereIs_Search(ret, "/usr/local/lib64/", fn);
    WhereIs_Search(ret, "/lib64/", fn);
    WhereIs_Search(ret, "/usr/lib/x86_64-linux-gnu/", fn);
    #endif
    WhereIs_Search(ret, "/usr/lib/", fn);
    WhereIs_Search(ret, "/usr/local/lib/", fn);
    WhereIs_Search(ret, "/lib/", fn);
    WhereIs_Search(ret, "/usr/lib/i386-linux-gnu/", fn);
 
    const char * ld = getenv("LD_LIBRARY_PATH");
    if (ld && strlen(ld)) {
        char * tmp = dsl_strdup(ld);
        char * p2 = NULL;
        char * p = strtok_r(tmp, ":", &p2);
        while (p) {
            strcpy(dir, p);
            if (dir[strlen(dir) - 1] != PATH_SEP) {
                strcat(dir, PATH_SEPS);
            }
            WhereIs_Search(ret, dir, fn);
            p = strtok_r(NULL, ":", &p2);
        }
        dsl_free(tmp);
    }
#endif
    return ret;
}
 
void DSL_CC WhereIs_FreeResults(WHEREIS_RESULTS * ptr) {
    if (ptr == NULL) { return; }
 
    for (int i=0; i < ptr->nCount; i++) {
        dsl_free(ptr->sResults[i]);
    }
    dsl_free(ptr);
}