/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Copyright by The HDF Group.                                               *
 * Copyright by the Board of Trustees of the University of Illinois.         *
 * All rights reserved.                                                      *
 *                                                                           *
 * This file is part of HDF.  The full HDF copyright notice, including       *
 * terms governing use, modification, and redistribution, is contained in    *
 * the COPYING file, which can be found at the root of the source code       *
 * distribution tree, or in https://support.hdfgroup.org/ftp/HDF/releases/.  *
 * If you do not have access to either file, you may request a copy from     *
 * help@hdfgroup.org.                                                        *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/* --- he-file.c  --- file and annotation manipulation routines */
#include "he.h"

#ifdef H4_HAVE_SYS_WAIT_H
#include <sys/wait.h>
#endif
#ifdef H4_HAVE_UNISTD_H
#include <unistd.h>
#endif

int
HEannotate(HE_CMD *cmd)
{
    int         i;
    const char *editor = NULL;
    int         ann    = HE_LABEL;

    for (i = 1; i < cmd->argc; i++)
        if (cmd->argv[i][0] == '-')
            switch (findOpt(cmd->argv[i] + 1)) {
                case HE_HELP:
                    puts("annotate [-label|-descriptor] [-editor <editor>]");
                    puts("\tEdit an annotation");
                    puts("\t-label\t\tEdit label (default)");
                    puts("\t-descriptor\tEdit descriptor");
                    puts("\t-editor\t\tUse editor (default EDITOR env value)");
                    return HE_OK;
                case HE_LABEL:
                    ann = HE_LABEL;
                    break;
                case HE_DESCRIPTOR:
                    ann = HE_DESCRIPTOR;
                    break;
                case HE_EDITOR:
                    if (++i < cmd->argc)
                        editor = cmd->argv[i];
                    break;
                case HE_NOTFOUND:
                    unkOpt(cmd->argv[i]);
                    return HE_FAIL;
                case HE_AMBIG:
                    ambigOpt(cmd->argv[i]);
                    return HE_FAIL;
                default:
                    irrOpt(cmd->argv[i]);
                    return HE_FAIL;
            }
        else {
            unkArg(cmd->argv[i]);
            return HE_FAIL;
        }
    return annotate(editor, ann);
}

/* Edit annontations (labels and descriptions) for the
 * current data element */
int
annotate(const char *editor, int ann)
{

    int32 len;  /* length of annotation */
    char *buf;  /* annotation buffer */
    char *file; /* tmp file name */
    int   i;
    int   ret;

    /* check if any hdf file is open
     */
    if (!fileOpen()) {
        noFile();
        return HE_FAIL;
    }

    /* Get the annotation from hdf file
     */
    len = getAnn(ann, currTag, he_desc[he_currDesc].ref, &buf);

    (void)getTmpName(&file);

    /* if there is prior annotation, put it into the tmp file
     */
    if (len > 0 && buf != NULL) {
        /* doctor the buffer a little for the editors
         */
        if (ann == HE_LABEL)
            buf[len] = '\n';
        else
            len--;
        writeToFile(file, buf, len + 1);
        free(buf);
    }

    /* make sure some editor will be used
     * defaults to /usr/bin/ex
     * but should be made a comple time option
     */
    if (editor == NULL) {
        editor = (char *)getenv("EDITOR");
        if (editor == NULL)
            editor = "/usr/bin/ex";
    }
    /* Use the fork/wait or system methods if supported, else no support. */
#if defined(H4_HAVE_FORK) && defined(H4_HAVE_WAIT)
    if (fork() == 0) {
        /* this is the child */
        if (execl(editor, editor, file, 0, (char *)NULL) == -1)
            fprintf(stderr, "Error while editing label.\n");

        /* return control to the parent if exec fails
         */
        exit(0);
    }

    /* the parent waits for the child to die */
    wait(0);
#elif defined(H4_HAVE_SYSTEM)
    {
        char cmd[256];
        if (strlen(editor) > 100) {
            fprintf(stderr, "Environment variable EDITOR too big\n");
        }
        else {
            sprintf(cmd, "%s %s", editor, file);
            system(cmd);
        }
    }
#endif

    /* read in edited annotation
     */
    len = readFromFile(file, &buf);
    if (len <= 0 || buf == NULL)
        return len;

    /* doctor the buffer for standard format
     */
    if (ann == HE_LABEL) {
        /* take out control characters from the end */
        for (i = len; i >= 0 && !isgraph((int)buf[i]); i--)
            ;
        buf[i + 1] = '\0';
    }

    /* forget the tmp file
     */
    removeFile(file);

    /* write annotation to the hdf file
     */
    ret = putAnn(ann, currTag, he_desc[he_currDesc].ref, buf, len);
    updateDesc();

    /* clean up */
    free(buf);
    return ret;
}

extern int he_backup;

int
HEopen(HE_CMD *cmd)
{
    int   backup = YES;
    int   i;
    char *file = NULL;

    for (i = 1; i < cmd->argc; i++)
        if (cmd->argv[i][0] != '-') {
            if (!file)
                file = cmd->argv[i];
            else {
                fprintf(stderr, "Only one file allowed.\n");
                return FAIL;
            }
        }
        else
            switch (findOpt(cmd->argv[i] + 1)) {
                case HE_HELP:
                    puts("open <file> [-nobackup]");
                    puts("\t-nobackup\tDon't make a backup for this file.");
                    return HE_OK;
                case HE_NOBACKUP:
                    backup = 0;
                    break;
                case HE_NOTFOUND:
                    unkOpt(cmd->argv[i]);
                    return FAIL;
                case HE_AMBIG:
                    ambigOpt(cmd->argv[i]);
                    return FAIL;
                default:
                    irrOpt(cmd->argv[i]);
                    return FAIL;
            }

    if (!file) {
        fprintf(stderr, "Please specify a file name.\n");
        return FAIL;
    }

    return openFile(file, backup);
}

/* openFile -- Internal open file routine. */
/* Called by:   HEopen, main */
/* Returns:     HE_OK and FAIL */
int
openFile(char *file, int backup)
{
    ASSERT(file);

    /* only allow one file at a time */
    if (fileOpen()) {
        fprintf(stderr, "File: %s is still open. Close before reopening.\n", he_file);
        return FAIL;
    }

    /* Make backup first if necessary */
    if (backup) {
        if (backupFile(file) < 0)
            return FAIL;
        he_backup = 1;
    }
    else
        he_backup = 0;

    if (initFile(file) < 0)
        return FAIL;

    return HE_OK;
}

/* HEclose -- close current file */
/* Called by HEdoCmd */
int
HEclose(HE_CMD *cmd)
{
    int i;
    int keep = NO;

    for (i = 1; i < cmd->argc; i++)
        if (cmd->argv[i][0] != '-') {
            unkArg(cmd->argv[i]);
            return FAIL;
        }
        else
            switch (findOpt(cmd->argv[i] + 1)) {
                case HE_HELP:
                    puts("close [-keep]");
                    puts("\t-keep\t\tDon't delete the backup file.");
                    return HE_OK;
                case HE_KEEP:
                    keep = YES;
                    break;
                case HE_NOTFOUND:
                    unkOpt(cmd->argv[i]);
                    return FAIL;
                case HE_AMBIG:
                    ambigOpt(cmd->argv[i]);
                    return FAIL;
                default:
                    irrOpt(cmd->argv[i]);
                    return FAIL;
            }

    return closeFile(keep);
}

int
HErevert(HE_CMD *cmd)
{
    if (cmd->argc < 2)
        return revert();

    if (cmd->argv[1][0] != '-' || findOpt(cmd->argv[1] + 1) == HE_HELP) {
        puts("revert");
        puts("\tDiscard all changes.");
        return HE_OK;
    }
    return HE_FAIL;
}

int
HEwrite(HE_CMD *cmd)
{
    int    i;
    char  *file;
    uint16 ref = 0;
    uint16 tag = 0;

    if (cmd->argc < 2 || (cmd->argv[1][0] == '-' && findOpt(cmd->argv[1] + 1) == HE_HELP)) {
        puts("write <file> [-attachto <atag> <aref>]");
        puts("\tWrite an element or group into another HDF file");
        puts("\t-attchto\tONLY for writing annontations");
        puts("\t\t\tWhat element to attach annotation to");
        return HE_OK;
    }

    file = cmd->argv[1];
    for (i = 2; i < cmd->argc; i++)
        if (cmd->argv[i][0] != '-')
            file = cmd->argv[i];
        else
            switch (findOpt(cmd->argv[i] + 1)) {
                case HE_ATTACHTO:
                    tag = (uint16)atoi(cmd->argv[++i]);
                    ref = (uint16)atoi(cmd->argv[++i]);
                    break;
                case HE_NOTFOUND:
                    unkOpt(cmd->argv[i]);
                    return HE_FAIL;
                case HE_AMBIG:
                    ambigOpt(cmd->argv[i]);
                    return HE_FAIL;
                default:
                    irrOpt(cmd->argv[i]);
                    return HE_FAIL;
            }
    return writ(file, tag, ref);
}

int
writ(char *file, uint16 tag, uint16 ref)
{
    int    ret;
    uint16 ref1;

    if (!fileOpen()) {
        noFile();
        return HE_FAIL;
    }
    if (!strcmp(file, he_file)) {
        fprintf(stderr, "Cannot write to self.\n");
        return HE_FAIL;
    }

    /* handle special cases */
    if (isAnnot(currTag))
        return writeAnnot(file, tag, ref);
    if (isGrp(currTag))
        return writeGrp(file);

    if (getNewRef(file, &ref1) < 0)
        return HE_FAIL;

    ret = writeElt(file, ref1, he_currDesc);
    return ret;
}

/* --------------------------- get a r8 from a file ----------------------- */

int
HEgetR8(HE_CMD *cmd)
{
    int   i;
    int   xdim = 0, ydim = 0;
    char *image, *pal    = NULL;
    int   compress = 0;

    if (cmd->argc < 4 || (cmd->argv[1][0] == '-' && findOpt(cmd->argv[1] + 1) == HE_HELP)) {
        puts("getr8 <image> <xdim> <ydim> [-palette <palette>] [-raster|-rle|-imcomp]");
        puts("\tGet a r8 group from raw files");
        puts("\t-palette\tRaw palette file");
        puts("\t-raster\t\tNo compression (default)");
        puts("\t-rle\t\tRun-length compression");
        puts("\t-imcomp\t\tImcomp compression");
        return HE_OK;
    }
    image = cmd->argv[1];
    xdim  = atoi(cmd->argv[2]);
    ydim  = atoi(cmd->argv[3]);

    for (i = 4; i < cmd->argc; i++)
        if (cmd->argv[i][0] == '-')
            switch (findOpt(cmd->argv[i] + 1)) {
                case HE_PALETTE:
                    pal = cmd->argv[++i];
                    break;
                case HE_RASTER:
                    compress = 0;
                    break;
                case HE_RLE:
                    compress = HE_RLE;
                    break;
                case HE_IMCOMP:
                    compress = HE_IMCOMP;
                    break;
                case HE_NOTFOUND:
                    unkOpt(cmd->argv[i]);
                    return FAIL;
                case HE_AMBIG:
                    ambigOpt(cmd->argv[i]);
                    return FAIL;
                default:
                    irrOpt(cmd->argv[i]);
                    return FAIL;
            }
        else {
            unkArg(cmd->argv[i]);
            return FAIL;
        }

    if (!image) {
        fprintf(stderr, "No image file specified.\n");
        return FAIL;
    }
    if (xdim == 0 || ydim == 0) {
        fprintf(stderr, "No dimensions specified.\n");
        return FAIL;
    }
    return getR8(xdim, ydim, image, pal, compress);
}

/* --------------- generic put routines ---------------------- */

int
HEput(HE_CMD *cmd)
{
    int i;
    int verbose    = NO;
    char *template = (char *)"elt#.@";

    for (i = 1; i < cmd->argc; i++)
        if (cmd->argv[i][0] == '-')
            switch (findOpt(cmd->argv[i] + 1)) {
                case HE_HELP:
                    puts("put [-file <file>] [-verbose]");
                    puts("\tPut the raw binary of this element in a file");
                    puts("\t-file\t\tOut file name (default \"elt#.@\")");
                    puts("\t-verbose\tOutput diagnostic info");
                    return HE_OK;
                case HE_FILE:
                    template = cmd->argv[++i];
                    break;
                case HE_VERBOSE:
                    verbose = YES;
                    break;
                case HE_NOTFOUND:
                    unkOpt(cmd->argv[i]);
                    return HE_FAIL;
                case HE_AMBIG:
                    ambigOpt(cmd->argv[i]);
                    return HE_FAIL;
                default:
                    irrOpt(cmd->argv[i]);
                    return HE_FAIL;
            }
        else {
            unkArg(cmd->argv[i]);
            return HE_FAIL;
        }
    return put(template, verbose);
}

int
put(char *template, int verbose)
{
    int   length;
    char *data;
    int   ret;

    length = (int)getElement(he_currDesc, &data);
    if ((length <= 0) || (data == NULL))
        return HE_FAIL;
    ret = putWithTempl(template, he_currDesc, length, 1, data, length, verbose);
    free(data);

    return ret;
}

/* ------------------ routines to put an r8 into a file --------------------- */

int
HEputR8(HE_CMD *cmd)
{
    int         i;
    int         verbose = NO;
    const char *image   = "img#.@.%";
    const char *pal     = "pal#";

    for (i = 1; i < cmd->argc; i++)
        if (cmd->argv[i][0] == '-')
            switch (findOpt(cmd->argv[i] + 1)) {
                case HE_HELP:
                    puts("putr8 [-image <img>] [-palette <pal>] [-verbose]");
                    puts("\tPut an r8 group into raw image and palette files");
                    puts("\t-image\t\tImage file name template (default \"img#.@.%\")");
                    puts("\t-palette\tPalette file name template (default \"pal#\")");
                    puts("\t-verbose\tTo give output of steps taken");
                    return HE_OK;
                case HE_IMAGE:
                    image = cmd->argv[++i];
                    break;
                case HE_PALETTE:
                    pal = cmd->argv[++i];
                    break;
                case HE_VERBOSE:
                    verbose = YES;
                    break;
                case HE_NOTFOUND:
                    unkOpt(cmd->argv[i]);
                    return HE_FAIL;
                case HE_AMBIG:
                    ambigOpt(cmd->argv[i]);
                    return HE_FAIL;
                default:
                    irrOpt(cmd->argv[i]);
                    return HE_FAIL;
            }
        else {
            unkArg(cmd->argv[i]);
            return HE_FAIL;
        }
    return putR8(image, pal, verbose);
}

int
putR8(char *image, char *pal, int verbose)
{
    int   ret;
    int32 xdim, ydim;
    char *palette;
    char *raster;

    if (!fileOpen()) {
        noFile();
        return HE_FAIL;
    }
    if (!isRig(currTag)) {
        fprintf(stderr, "Current element not an image group.");
        return HE_FAIL;
    }
    getCurrRig(&xdim, &ydim, &palette, &raster);
    if (raster == NULL) {
        fprintf(stderr, "Cannot find raster.\n");
        return HE_FAIL;
    }
    ret = putWithTempl(image, he_currDesc, (int)xdim, (int)ydim, raster, (int)(xdim * ydim), verbose);
    free(raster);
    if (ret < 0)
        return HE_FAIL;
    if (palette != NULL) {
        int  i;
        char p[HE_PALETTE_SZ];

        for (i = 0; i < HE_COLOR_SZ; i++) {
            p[i]                   = *palette++;
            p[HE_COLOR_SZ + i]     = *palette++;
            p[2 * HE_COLOR_SZ + i] = *palette++;
        }
        ret = putWithTempl(pal, he_currDesc, (int)xdim, (int)ydim, p, HE_PALETTE_SZ, verbose);
        free(palette);
        if (ret < 0)
            return HE_FAIL;
    }

    return HE_OK;
}

/* end of he-file.c */