diff options
Diffstat (limited to 'examples/h5_elink_unix2win.c')
| -rw-r--r-- | examples/h5_elink_unix2win.c | 126 |
1 files changed, 65 insertions, 61 deletions
diff --git a/examples/h5_elink_unix2win.c b/examples/h5_elink_unix2win.c index c29e7db..44986cb 100644 --- a/examples/h5_elink_unix2win.c +++ b/examples/h5_elink_unix2win.c @@ -27,7 +27,6 @@ #include <stdlib.h> #include <string.h> - /* "Windows to Unix" traversal function for external links * * Translates a filename stored in Unix format to Windows format by replacing @@ -37,45 +36,44 @@ * Note that this may not be necessary on your system; many Windows systems can * understand Unix paths. */ -static hid_t elink_unix2win_trav(const char *link_name, hid_t cur_group, - const void *udata, size_t udata_size, hid_t lapl_id, hid_t dxpl_id) +static hid_t +elink_unix2win_trav(const char *link_name, hid_t cur_group, const void *udata, size_t udata_size, + hid_t lapl_id, hid_t dxpl_id) { - hid_t fid; - const char *file_name; - const char *obj_name; - char *new_fname = NULL; /* Buffer allocated to hold Unix file path */ - ssize_t prefix_len; /* External link prefix length */ - size_t fname_len; - size_t start_pos; /* Initial position in new_fname buffer */ - size_t x; /* Counter variable */ - hid_t ret_value = -1; + hid_t fid; + const char *file_name; + const char *obj_name; + char * new_fname = NULL; /* Buffer allocated to hold Unix file path */ + ssize_t prefix_len; /* External link prefix length */ + size_t fname_len; + size_t start_pos; /* Initial position in new_fname buffer */ + size_t x; /* Counter variable */ + hid_t ret_value = -1; printf("Converting Unix path to Windows path.\n"); - if(H5Lunpack_elink_val(udata, udata_size, NULL, &file_name, &obj_name) < 0) + if (H5Lunpack_elink_val(udata, udata_size, NULL, &file_name, &obj_name) < 0) goto error; fname_len = strlen(file_name); /* See if the external link prefix property is set */ - if((prefix_len = H5Pget_elink_prefix(lapl_id, NULL, 0)) < 0) + if ((prefix_len = H5Pget_elink_prefix(lapl_id, NULL, 0)) < 0) goto error; /* If so, prepend it to the filename. We assume that the prefix * is in the correct format for the current file system. */ - if(prefix_len > 0) - { + if (prefix_len > 0) { /* Allocate a buffer to hold the filename plus prefix */ new_fname = malloc(prefix_len + fname_len + 1); /* Copy the prefix into the buffer */ - if(H5Pget_elink_prefix(lapl_id, new_fname, (size_t)(prefix_len + 1)) < 0) + if (H5Pget_elink_prefix(lapl_id, new_fname, (size_t)(prefix_len + 1)) < 0) goto error; start_pos = prefix_len; } - else - { + else { /* Allocate a buffer to hold just the filename */ new_fname = malloc(fname_len + 1); start_pos = 0; @@ -84,9 +82,8 @@ static hid_t elink_unix2win_trav(const char *link_name, hid_t cur_group, /* We should now copy file_name into new_fname starting at position pos. * We'll convert '/' characters into '\' characters as we go. */ - for(x=0; file_name[x] != '\0'; x++) - { - if(file_name[x] == '/') + for (x = 0; file_name[x] != '\0'; x++) { + if (file_name[x] == '/') new_fname[x + start_pos] = '\\'; else new_fname[x + start_pos] = file_name[x]; @@ -94,38 +91,37 @@ static hid_t elink_unix2win_trav(const char *link_name, hid_t cur_group, new_fname[x + start_pos] = '\0'; /* Now open the file and object within it */ - if((fid = H5Fopen(new_fname, H5F_ACC_RDWR, H5P_DEFAULT)) < 0) + if ((fid = H5Fopen(new_fname, H5F_ACC_RDWR, H5P_DEFAULT)) < 0) goto error; ret_value = H5Oopen(fid, obj_name, lapl_id); /* If this fails, our return value will be negative. */ - if(H5Fclose(fid) < 0) + if (H5Fclose(fid) < 0) goto error; /* Free file name if it's been allocated */ - if(new_fname) + if (new_fname) free(new_fname); return ret_value; error: /* Free file name if it's been allocated */ - if(new_fname) + if (new_fname) free(new_fname); return -1; } const H5L_class_t elink_unix2win_class[1] = {{ - H5L_LINK_CLASS_T_VERS, /* H5L_class_t version */ - H5L_TYPE_EXTERNAL, /* Link type id number */ - "unix2win external link", /* Link class name for debugging */ - NULL, /* Creation callback */ - NULL, /* Move callback */ - NULL, /* Copy callback */ - elink_unix2win_trav, /* The actual traversal function */ - NULL, /* Deletion callback */ - NULL /* Query callback */ + H5L_LINK_CLASS_T_VERS, /* H5L_class_t version */ + H5L_TYPE_EXTERNAL, /* Link type id number */ + "unix2win external link", /* Link class name for debugging */ + NULL, /* Creation callback */ + NULL, /* Move callback */ + NULL, /* Copy callback */ + elink_unix2win_trav, /* The actual traversal function */ + NULL, /* Deletion callback */ + NULL /* Query callback */ }}; - /* The example function. * Creates a file named "unix2win.h5" with an external link pointing to * the file "u2w/u2w_target.h5". @@ -136,55 +132,65 @@ const H5L_class_t elink_unix2win_class[1] = {{ static int unix2win_example(void) { - hid_t fid = (-1); /* File ID */ - hid_t gid = (-1); /* Group ID */ + hid_t fid = (-1); /* File ID */ + hid_t gid = (-1); /* Group ID */ /* Create the target file. */ #ifdef H5_HAVE_WIN32_API - if((fid=H5Fcreate("u2w\\u2w_target.h5", H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT))<0) goto error; + if ((fid = H5Fcreate("u2w\\u2w_target.h5", H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT)) < 0) + goto error; #else - if((fid=H5Fcreate("u2w/u2w_target.h5", H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT))<0) goto error; + if ((fid = H5Fcreate("u2w/u2w_target.h5", H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT)) < 0) + goto error; #endif - if(H5Fclose(fid) < 0) goto error; + if (H5Fclose(fid) < 0) + goto error; /* Create the source file with an external link in Windows format */ - if((fid=H5Fcreate("unix2win.h5", H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT))<0) goto error; + if ((fid = H5Fcreate("unix2win.h5", H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT)) < 0) + goto error; /* Create the external link */ - if(H5Lcreate_external("u2w/../u2w/u2w_target.h5", "/", fid, "ext_link", H5P_DEFAULT, H5P_DEFAULT) < 0) goto error; + if (H5Lcreate_external("u2w/../u2w/u2w_target.h5", "/", fid, "ext_link", H5P_DEFAULT, H5P_DEFAULT) < 0) + goto error; - /* If we are not on Windows, assume we are on a Unix-y filesystem and - * follow the external link normally. - * If we are on Windows, register the unix2win traversal function so - * that external links can be traversed. - */ + /* If we are not on Windows, assume we are on a Unix-y filesystem and + * follow the external link normally. + * If we are on Windows, register the unix2win traversal function so + * that external links can be traversed. + */ #ifdef H5_HAVE_WIN32_API /* Register the elink_unix2win class defined above to replace default * external links */ - if(H5Lregister(elink_unix2win_class) < 0) goto error; + if (H5Lregister(elink_unix2win_class) < 0) + goto error; #endif /* Now follow the link */ - if((gid = H5Gopen2(fid, "ext_link", H5P_DEFAULT)) < 0) goto error; + if ((gid = H5Gopen2(fid, "ext_link", H5P_DEFAULT)) < 0) + goto error; printf("Successfully followed external link.\n"); /* Close the group and the file */ - if(H5Gclose(gid) <0) goto error; - if(H5Fclose(fid) <0) goto error; + if (H5Gclose(gid) < 0) + goto error; + if (H5Fclose(fid) < 0) + goto error; return 0; - error: +error: printf("Error!\n"); - H5E_BEGIN_TRY { - H5Gclose (gid); - H5Fclose (fid); - } H5E_END_TRY; + H5E_BEGIN_TRY + { + H5Gclose(gid); + H5Fclose(fid); + } + H5E_END_TRY; return -1; } - /* Main function * @@ -193,12 +199,10 @@ unix2win_example(void) int main(void) { - int ret; + int ret; printf("Testing unix2win external links.\n"); ret = unix2win_example(); return ret; } - - |